Integrated Math 1 Module 3 Honors Sequences and Series Ready, Set, Go! Homework

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1 1 Integrated Math 1 Module 3 Honors Sequences and Series Ready, Set, Go! Homework Adapted from The Mathematics Vision Project: Scott Hendrickson, Joleigh Honey, Barbara Kuehl, Travis Lemon, Janet Sutorius 2012 Mathematics Vision Project MVP In partnership with the Utah State Office of Education Licensed under the Creative Commons Attribution NonCommercial ShareAlike 3.0 Unported license

2 Name: Sequences and Series 3.1H Ready, Set, Go! Ready Topic: Finding values for a pattern 1. Bob Cooper was born in By 1930 he had 3 sons, all with the Cooper last name. By 1960 each of Bob s 3 boys had exactly 3 sons of their own. By the end of each 30 year time period, the pattern of each Cooper boy having exactly 3 sons of their own continued. How many Cooper sons were born in the 30 year period between 1960 and 1990? 2 2. Create a table that would show this pattern. 3. Predict how many Cooper sons will be born between 1990 and 2020, if the pattern continues. 4. Try to write an equation that would help you predict the number of Cooper sons that would be born between 2020 and If you can t find the equation, explain it in words. 5. How many Cooper sons were born in all from 1900 to 2020? Topic: Function Notation For each of the following, find, and Complete each table. 9. Term 1 st 2 nd 3 rd 4 th 5 th 6 th 7 th 8 th Value Term 1 st 2 nd 3 rd 4 th 5 th 6 th 7 th 8 th Value 9 81

3 3 Set Topic: Completing a table Fill in the table. Then write a sentence explaining how you figured out the values to put in each cell. Explain how to figure out what will be in cell # You run a business making birdhouses. You spend $600 to start your business, and it costs you $5.00 to make each birdhouse. # of birdhouses Total cost to build Explanation: 12. You borrow $500 from a relative, and you agree to pay back the debt at a rate of $15 per month. # of months Amount of money owed Explanation: Topic: Evaluating equations Evaluate the following equations when. Organize your inputs and outputs into a table of values for each equation. Let x be the input and y be the output x y x y x y

4 4 Go Topic: Good viewing window When sketching a graph of a function, it is important that we see key points. For linear functions, we want a window that shows important information related to the story. Often, this means including both the x- and y- intercepts Find an appropriate graphing window for each of the following linear functions. Fill in the blanks showing the lower and upper values and include the scale for each axis. You may use an online graphing utility such as Desmos ( or MATHPAPA ( Appropriate Graphing Window: x: by y: x-scale: y-scale: Appropriate Graphing Window: x: by y: x-scale: y-scale: Appropriate Graphing Window: x: by y: x-scale: y-scale: Appropriate Graphing Window: x: by y: x-scale: y-scale:

5 Name: Sequences and Series 3.2H Ready, Set, Go! Ready Topic: Write the equation of a line given two points. Write an equation of the line that goes through the given two points. 1. and 2. and 5 Set Topic: Recursive and explicit functions of arithmetic sequences Below you are given various types of information. Write the recursive and explicit functions for each sequence. Finally, graph each sequence, making sure you clearly label your axes Each day Tania decides to do something nice for 2 strangers. Write recursive and explicit equations that represent the number of strangers Tania that does something nice for each day (not total number of strangers).

6 6 5. Claire has $300 in an account. She decides she is going to take out half of what s left in there at the end of each month. 6. Tania creates a chain letter and sends it to four friends. Each day each friend is then instructed to send it to four friends and so forth. 7. Topic: Summation notation for a series 8. Write out what is meant by: a. b. 9. Write the following in summation notation: a. b. 10. Are the following series equivalent? Explain your reasoning.

7 7 Go Topic: Arithmetic and geometric sequences Determine if the following sequences are arithmetic, geometric, both, or neither , 94, 79, Christine did 41 sit-ups on Tuesday, 44 sit-ups on Wednesday, 46 sit-ups on Thursday, 47 sit-ups on Friday , 9, 81, 729, 14. While sorting change into a piggy bank, Ruth put 14 coins in the first piggy bank, 14 coins in the second piggy bank, 14 coins in the third piggy bank, and 14 coins in the fourth piggy bank A bookshelf has 7 shelves of different widths. Each shelf is narrower than the shelf below it. The bottom three shelves are 36 in., 31 in., and 26 in. wide. The shelf widths decrease by the same amount from bottom to top. a. What is the width of the top shelf? b. What is the total shelf space of all seven shelves?

8 Name: Sequences and Series 3.3H Ready, Set, Go! Ready Topic: Arithmetic and geometric sequences Find the missing values for each arithmetic or geometric sequence. Then say if the sequence has a constant difference or a constant ratio, and say what the constant difference/rate is , 10, 15,, 25, 30 Constant difference or a constant ratio? 2. 20, 10,, 2.5,, Constant difference or a constant ratio? The constant difference/ratio is 3. 2, 5, 8,, 14,, Constant difference or a constant ratio? The constant difference/ratio is 4. 30, 24,, 12, 6, Constant difference or a constant ratio? The constant difference/ratio is The constant difference/ratio is Set Topic: Determine recursive equations Two consecutive terms in an arithmetic sequence are given. Find the constant difference and the recursive equation. 5. If Recursive Function: 6. If Recursive Function:

9 9 Topic: Recursive and explicit equations Determine whether each situation represents an arithmetic or geometric sequence and then find the recursive and explicit equation for each. 7. Arithmetic or Geometric? 8. Time (days) Number of Cells Arithmetic or Geometric? 9. Cami invested $6,000 dollars into an account that earns 10% interest each year. Arithmetic or Geometric? 10. Scott decides to add running to his exercise routine and runs a total of one mile his first week. He plans to double the number of miles he runs each week. Arithmetic or Geometric? 11. Vanessa has $60 to spend on rides at the State Fair. Each ride cost $4. Arithmetic or Geometric? 12. Michelle likes chocolate so much that she eats it every day and it always 3 more pieces than the previous day. She ate 3 pieces on day 1. Arithmetic or Geometric?

10 10 Go Topic: Evaluate using function notation Find each value Find Find Find and. Topic: Solving systems of linear equations Solve the system of equations using a matrix. 16. { 17. { 18. { 19. {

11 Name: Sequences and Series 3.4H Ready, Set, Go! Ready Topic: Constant Ratios Find the constant ratio for each geometric sequence. 1. 2, 4, 8, 16, , 5, 2.5, 1.25, Set Topic: Recursive and explicit equations Fill in the blanks for each table and then write the recursive and explicit equation for each sequence. 5. Table 1 n Table 2 7. Table 3 8. Table 4 n n n

12 12 Topic: Subscript notation for sequences Other textbooks may use subscript notation to write rules for sequences. Use the examples below to write the recursive and explicit rules for the following sequences. Example Sequence Function Notation Subscript Notation Topic: Arithmetic series 11. Find the sum of the first 12 terms of the sequence 12. Find the sum: 13. Find the sum of the first 150 terms of the sequence 20, 15, 10, 5, 14. Find the sum of the first 200 positive even numbers. 15. The Agnesi High School auditorium has exactly 26 rows of seats. The rows are labeled, in order, from the front of the auditorium to the back from A through Z. There are 8 seats in the row A. Each row after the first row has two more seats than the previous row. There are 10 seats in row B, 12 seats in row C and so on. a. How many seats are there in row Z? b. What is the total number of seats in the Agnesi High School auditorium?

13 The first figure contains one segment. For each successive figure, six segments replace each segment. This is an example of a fractal. a. How many segments are in each of the first four figures of the sequence? b. Write a recursive definition for the sequence. Go Topic: Graphing linear equations and labeling your axes. Graph the following linear equations. Label your axes

14 Name: Sequences and Series 3.5H Ready, Set, Go! Ready Topic: Arithmetic and geometric sequences For each set of sequences, find the first five terms. Compare arithmetic sequences and geometric sequences. Which grows faster? When? 1. Arithmetic sequence: common difference, d = 3 Geometric sequence: common ratio, r = 3 14 Arithmetic: Geometric: Which value do you think will be more, or? Why? 2. Arithmetic sequence: common difference, d = 10 Geometric sequence: common ratio, r = 2 Arithmetic: Geometric: Which value do you think will be more, or? Why?

15 15 Set Topic: Arithmetic sequences Each of the tables below represents an arithmetic sequence. Find the missing terms in the sequence, showing your method. 3. Table 1 n Table 2 5. Table 3 6. Table 4 n n n Table 5 n Topic: Geometric sequences Each of the tables below represents a geometric sequence. Find the missing terms in the sequence, showing your method. 8. Table 1 n

16 16 9. Table Table Table 4 n n n Table 5 n Go Topic: Sequences Determine the recursive and explicit equations for each (if the sequence is not arithmetic or geometric, try your best). Express answers in both function subscript notation. 13. This sequence is: Arithmetic, Geometric, Neither Recursive Equation: Explicit Equation: 14. This sequence is: Arithmetic, Geometric, Neither Recursive Equation: Explicit Equation: 15. This sequence is: Arithmetic, Geometric, Neither Recursive Equation: Explicit Equation:

17 (The percentage of tiles shaded black) This sequence is: Arithmetic, Geometric, Neither Recursive Equation: Explicit Equation: 17. This sequence is: Arithmetic, Geometric, Neither Recursive Equation: Explicit Equation: 18. Write the following series in summation notation: 19. Find the sum of

18 Name: Sequences and Series 3.6H Ready, Set, Go! Ready Topic: Comparing linear equations and arithmetic sequences 1. Describe similarities and differences between linear equations and arithmetic sequences. 18 Similarities Differences Set Topic: representations of arithmetic sequences Use the given information to complete the other representations for each arithmetic sequence. 2. Recursive Equation: Graph: Explicit Equation: Table: Days Cost Create a Context:

19 19 3. Recursive Equation: Graph: Explicit Equation: Table: Create a Context: 4. Recursive Equation: Graph: Explicit Equation: Table: Create a Context: 5. Recursive Equation: Graph: Explicit Equation: Table: Create a Context: Janet wants to know how many seats are in each row of the theater. Jamal lets her know that each row has 2 seats more than the row in front of it. The first row has 14 seats.

20 20 Topic: Application of arithmetic and geometric series Write a series representation using summation notation for each scenario and then find the sum. 6. Logs are stacked in a pile with 24 logs on the bottom row and 15 on the top row. There are 10 rows in all with each row having one more log than the one above it. How many logs are in the stack? 7. Each hour, a grandfather clock chimes the number of times that corresponds to the time of day. For example, at 3:00, it will chime 3 times. How many times does the clock chime in a day? 8. A company is offering a job with a salary of $30,000 for the first year and a 5% raise each year after that. If that 5% raise continues every year, find the total amount of money you will have earned by the end of your 5 th year. Go Topic: Writing explicit equations Given the recursive equation for each arithmetic sequence, write the explicit equation

21 21 Name: Sequences and Series Review Use the given information to state as much as possible about each sequence. Your answer should include: type of sequence, the common difference or common ration, a table of at least 5 terms, a graph, the recursive rule, and the explicit rule. 1. Type: n Common difference/ratio: Recursive rule:, Explicit rule: 2. Type: n Common difference/ratio: Recursive rule: Explicit rule:

22 22 3. Type: Arithmetic n 1 3 Common difference/ratio: 2 Recursive rule: Explicit rule: 4. Type: n 1 40 Common Ratio = Recursive rule: Explicit rule: 5. Explain how you tell if a sequence is arithmetic and if a sequence is geometric.

23 23 For #6-8, determine if each sequence is arithmetic or geometric. Find the values of the next two terms. Then write the explicit and recursive formulas for each sequence. 6. Arithmetic or Geometric Next 2 terms: Recursive Formula: Explicit Formula: 7. Arithmetic or Geometric Next 2 terms: Recursive Formula: Explicit Formula: 8. Arithmetic or Geometric Next 2 terms: Recursive Formula: Explicit Formula: 9. Find the missing terms of the arithmetic sequence below. Be sure to show all work. n Find the missing terms of the geometric sequence below. Be sure to show all work. n Find the missing terms of the geometric sequence below. Be sure to show all work. n

24 Find the sum of the first 50 multiples of A child building a tower with blocks uses 15 for the bottom row. Each row has 2 fewer blocks than the previous row. Suppose that there are 8 rows in the tower. a. How many blocks are used for the top row? b. What is the total number of blocks in the tower? 14. What is the common ratio of the series modeled by? 15. How many terms are in the geometric sequence having a first term of 2, a last term of 32, and a common ratio of? 16. A snail is crawling straight up a wall. The first hour it climbs 16 inches, the second hour it climbs 12 inches, and each succeeding hour, it climbs only three-fourths the distance it climbed the previous hour. Assume the pattern continues. a. How far does the snail climb during the fifth hour? b. What is the total distance the snail has climbed in five hours? c. Express the total distance with summation notation.

25 25 Module 4H Introduction Homework The following problems are intended for students to work on after the Module 3H Test. The first four problems introduce the beginning tasks of Module 4H. The problems are meant to be done on their own and will be discussed during the warm up the next class. The following page is blank for the teacher to copy and give to each student after the test. Below are the solutions for the challenge problems. For #1-4, create a mathematical model for that includes a table, graph, and equation: 1. My little sister, Savannah, is three years old. She has a piggy bank that she wants to fill. She started with five pennies and each day when I come home from school, she is excited when I give her three pennies that are left over from my lunch money. Create a mathematical model for the number of pennies in the piggy bank on day n. 2. Our family has a small pool for relaxing in the summer that holds 1500 gallons of water. I decided to fill the pool for the summer. When I had 5 gallons of water in the pool, I decided that I didn t want to stand outside and watch the pool fill, so I had to figure out how long it would take so that I could leave, but come back to turn off the water at the right time. I checked the flow on the hose and found that it was filling the pool at a rate of 2 gallons every five minutes. Create a mathematical model for the number of gallons of water in the pool at t minutes. 3. I m more sophisticated than my little sister so I save my money in a bank account that pays me 3% interest on the money in the account at the end of each month. (If I take my money out before the end of the month, I don t earn any interest for the month.) I started the account with $50 that I got for my birthday. Create a mathematical model of the amount of money I will have in the account after m months.

26 4. At the end of the summer, I decide to drain the swimming pool that holds 1500 gallons of water. I noticed that it drains faster when there is more water in the pool. That was interesting to me, so I decided to measure the rate at which it drains. I found that it was draining at a rate of 3% every minute. Create a mathematical model of the gallons of water in the pool at t minutes. 26 Module 3 Challenge Problems 5. Consider the pattern of square grids shown. The sum of the numbers in the square grid at Stage 3 is 27. If the pattern continues, what will be the sum of the numbers in the square grid at Stage 7? 6. The sum of a list of seven positive integers is 42. The mean, median and mode are consecutive integers, in some order. What is the largest possible integer in the list?