Data Analysis & Per. Fin. Lit. 8th grade

The scatterplot shows the number of people in each of 8 different households and the average amount of money each household spent on groceries.

Based on the scatterplot, what is the best prediction of the average amount of money spent on groceries for a household that has 7 people?

• $240

• $190

• $210

• $300

Ben collected data from a group of 12 people. He measured each person’s resting heart rate and recorded the average number of hours each person exercised per week. He created a scatterplot to show the data he collected.

Based on the scatterplot, what is the best prediction of the resting heart rate, in beats per minute, of a person who exercises an average of 8 hours each week?

• 30 beats per minute

• 50 beats per minute

• 55 beats per minute

• 60 beats per minute

Julie made 25 international long-distance phone calls to London last month. The scatterplot below shows the length and cost of each phone call she made.

Which conclusion is best supported by the scatterplot?

• As the length of a call increases, the cost of the call increases.

• As the length of a call increases, the cost of the call remains the same.

• As the length of a call increases, the cost of the call decreases.

• There is no relationship between the length of a call and the cost of a call.

The scatterplot shows the average number of hours each of 13 people spends at work every week and the average number of hours each of them spends on recreational activities every week.

Based on the scatterplot, what is the best prediction of the average number of hours a person spends at work every week if that person spends an average of 10 hours on recreational activities every week?

• 33 h

• 85 h

• 50 h

• 65 h

Which scatterplot suggests a linear relationship between x and y?

• A

• B

• C

• D

Clarissa needs a $2,500 loan in order to buy a car. Which loan option would allow her to pay the least amount of interest?

• An 18-month loan with a 4.75% annual simple interest rate

• A 30-month loan with a 4.00% annual simple interest rate

• A 24-month loan with a 4.25% annual simple interest rate

• A 36-month loan with a 4.50% annual simple interest rate

Mr. Wilkins deposited $2,500 in a new account at his bank. • The bank pays 6.5% interest compounded annually on this account. • Mr. Wilkins makes no additional deposits or withdrawals. Which amount is closest to the balance of the account at the end of 2 years? A = P (1 + r)^t

• $2,835.56

• $2,513.00

• $2,662.50

• $2,825.00

An eighth-grade student estimated that she needs $8,800 for tuition and fees for each year of college. She already has $5,000 in a savings account. The table shows the projected future value of the account in five years based on different monthly deposits.

The student wants to have enough money saved in five years to pay the tuition and fees for her first two years of college. Based on the table, what is the minimum amount she should deposit in the savings account every month?

• $200

• $300

• $100

• $400

Alejandra and her family are discussing how to pay for her college education. The cost of tuition at the college that Alejandra wants to attend is $9,000 per year. Alejandra’s parents will pay 85% of the tuition cost every year, and she will pay the rest. Alejandra has one year to save enough money to attend her first year of college. What is the minimum amount of money she should save every month in order to reach her goal?

• $637.50

• $1,350.00

• $112.50

• $28.12

Tamara invested $15,000 in an account that pays 4% annual simple interest. Tamara will not make any additional deposits or withdrawals. How much interest will Tamara earn on her investment at the end of 3 years? I = Prt

• $1,800

• $600

• $450

• $1,873