Refer to our Texas Go Math Grade 8 Answer Key Pdf to score good marks in the exams. Test yourself by practicing the problems from Texas Go Math Grade 8 Unit 7 Study Guide Review Answer Key.

## Texas Go Math Grade 8 Unit 7 Study Guide Review Answer Key

**Texas Go Math Grade 8 Unit 7 Exercises Answer Key**

**Module 16 Managing Your Money and Planning for Your Future**

Question 1.

Sheri is going to take out a loan for $4,000 that she plans to pay back in 2 years. She wants to know how much more it will cost her in interest if she uses her credit card at 18% interest instead of borrowing from the bank at 10% interest. Both loans require monthly payments. Use an online calculator to find the total repayment for each loan and the difference in the cost of these two choices. (Lesson 16.1)

Answer:

Question 2.

You are trying to decide which account to put $3,500 into for the next 6 years. One account has an interest rate of 2.9%, compounded annually. The other account has a simple interest rate of 3.1 %. Which account will earn more interest over 6 years, and how much more interest will it earn? (Lesson 16.2)

Answer:

Question 3.

Maria has $ 120 to spend on food for the week. She goes out to a restaurant to eat dinner with her friends and spends $62 on the meal. Did Maria make a financially responsible decision or a financially irresponsible decision? Explain your answer. (Lesson 16.3)

Answer:

Question 4.

Use an online tool to estimate the cost for one year at a 4-year university and one year at a 2-year college in Texas. (Lesson 16.4)

a. Find the cost of attending the university for four years.

Answer:

b. Find the cost of attending the two-year college and transferring to the university for your final two years of school.

Answer:

**Texas Go Math Grade 8 Unit 7 Performance Tasks Answer Key**

Question 1.

**CAREERS IN MATH** Organic Farmer Carlos is an organic farmer, and his business is doing so well that he his thinking of expanding in the next few years. He decides to start saving for this expansion and is going to put $8,200 into a savings account. At his credit union, he has two choices for savings accounts: Simple Savers that earns 2% simple interest per year, and Super Savers which earns 1.95% interest, compounded annually.

a. How much will Carlos have after 2 years if he chooses the Simple Savers account? Show your work.

Answer:

b. How much will Carlos have after 2 years if he chooses the Super Savers account? Show your work.

Answer:

c. Which account would you recommend Carlos use and why?

Answer:

d. If Carlos decides to keep the money in the savings account for 5 years, would you change your recommendation? Why or why not?

Answer:

Question 2.

Kay wants a new television. She sees an advertisement in the newspaper for a rent-to-own store, where for $80 a month she can rent a new television. And, if she rents for 18 months, she will own the television outright. Kay is considering this option, because she doesn’t have enough money to purchase a television but she can pay $80 a month.

a. If Kay rents the television for 18 months, how much will she pay in total for the television?

Answer:

b. The same television sells for $429 at an electronics store. How much more will Kay end up paying if she rents the television for 18 months than if she buys it outright?

Answer:

c. What financially responsible recommendation would you give to Kay about purchasing the television?

Answer:

Question 3.

Anastasia is a high school senior who wants to be an architect. She was accepted at a four-year university and was offered a scholarship of $17,800 per year. The costs per year at this university are shown in the table.

She can also attend a community college for the first two years. The tuition for the community college is $1,150 per year. She would need to rent an apartment and buy her food, which she estimates will cost $400 a month for the apartment and $210 a month for food. She would still need to buy books and materials at $850 a year.

a. How much will it cost Anastasia to attend the university for all four years of college, assuming she has her scholarship all four years, and she does not pay for housing and food during the summers? Show how you got your answer.

Answer:

b. How much will it cost Anastasia to attend the community college for the first two years, and to attend the university for the last two years? Show your work.

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c. Give one reason in favor of going to the university for her entire college career, and one reason in favor of going two years to the community college and two years to the university.

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**Texas Go Math Grade 8 Unit 7 Mixed Review Texas Test Prep Answer Key**

**Selected Response**

Question 1.

Which interest rate and time period result in the lowest total loan repayment for a $5,000 loan earning simple interest?

(A) 3 years at 10%

(B) 3 years at 13%

(C) 4 years at 8%

(D) 4 years at 11%

Answer:

Question 2.

Which of the relations below is a function?

Answer:

Question 3.

Amanda used her PIN to complete a transaction at a department store. Which payment method does this describe?

(A) gift card

(B) credit card

(C) debit card

(D) personal check

Answer:

Question 4.

What is the surface area of the rectangular prism?

(A) 160 cm^{2}

(B) 164 cm^{2}

(C) 328 cm^{2}

(D) 392 cm^{2}

Answer:

Question 5.

Rianna opens a savings account with $900. Her account earns interest at a rate of 1.3%, compounded annually. How much money is in the account after 4 years?

(A) $46.80

(B) $47.72

(C) $946.80

(D) $947.72

Answer:

**Hot Tips!** Some answer choices, called distracters, may seem correct because they are based on common errors made in calculations.

Question 6.

Richard took a handful of pencils from a large box. Out of the 15 pencils in his hand, 4 were glittery. How many glittery pencils should Richard expect to find in the box if there are a total of 240 pencils?

(A) 16 glittery pencils

(B) 32 glittery pencils

(C) 64 glittery pencils

(D) 96 glittery pencils

Answer:

Question 7.

Yvonne started running 8 minutes after Cassie started. Cassie was running at a rate of 500 feet per minute. Yvonne was running at a rate of 600 feet per minute. Which equation could you solve to find how long it will take Yvonne to catch up to Cassie?

(A) 600t + 3 = 500t

(B) 600t + 4,800 = 500t

(C) 500t + 3 = 600t

(D) 500t + 4,000 = 600t

Answer:

Question 8.

Leah is planning on attending a public university to earn a four year bachelor’s degree. For one year, the tuition and fees are $10,220, room and board is $6250, and books are $540. At these rates, how much should Leah expect four years of school to cost?

(A) $16,470

(B) $17,010

(C) $34,020

(D) $68,040

Answer:

Question 9.

The square below is dilated under the dilation (x, y) →(0.25x, 0.25y).

What are the coordinates of A’?

(A) (-4, -4)

(B) (-1, -1)

(C) (-2, -2)

(D) (4, -4)

Answer:

**Gridded Response**

Question 10.

Fletcher puts $4,500 in a savings account earning 1.5% interest compounded annually. He does not make any deposits or withdrawals for 3 years. How much interest does the account earn? Round to the nearest cent.

Answer:

**Hot Tips!** Underline key words given in the test question so you know for certain what the question is asking.

Question 11.

Pat puts $1,310 in a savings account earning 2% simple interest and does not make any deposits or withdrawals for 8 years. How much interest does the account earn?

Answer:

**Texas Go Math Grade 8 Unit 7 Vocabulary Review Answer Key**

Use the puzzle to preview key vocabulary from this unit. Unscramble the circled letters within found words to answer the riddle at the bottom of the page.

**Across**

2. College funding awards for students based on achievement. (Lesson 1.4)

4. Payment card you can use to make purchases, and the money is deducted immediately from a bank account. (Lesson 16.4)

5. College funding awards from the government or other organizations, usually for students who need money the most. (Lesson 16.4)

**Down**

1. The original amount of money deposited or saved. (Lesson 16.2)

3. Payment card you can use to make purchases, then pay a bill at the end of a billing cycle. (Lesson 16.4)

Question.

Why did the man put his money in the freezer?

Answer:

Because he wanted ____ ____ ____ ____, ____ ____ ____ ____ ____ ____ ____ ____!