Unit 2 Review

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?

• $2835.56

• $2513.00

• $2662.50

• $2825.00

Nicolas has $650 to deposit into two different savings accounts.

• Nicolas will deposit $400 into Account I, which earns 3.5% annual simple interest.

• He will deposit $250 into Account II, which earns interest 3 1/4% compounded annually.

Nicolas will not make any additional deposits or withdrawals. Which amount is closest to the total balance of these two accounts at the end of 2 years?

• $672.13

• $695.00

• $694.25

• $694.51

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?

• $1,800

• $600

• $450

• $1,873

Gabriel deposits $2,500 into each of two savings accounts.

• Account I earns 4% annual simple interest.

• Account II earns 4% interest compounded annually.

Gabriel does not make any additional deposits or withdrawals. What is the sum of the balances of Account I and Account II at the end of 3 years?

• $5,600.00

• $5,612.16

• $5,624.32

• $5,200.00

Janelle buys a container shaped like a cylinder. It has a radius r and height h. She knows the cylinder is made up of two circles and one rectangle. Which expression represents the surface area of her container?

• (2 × πr2) + (2πr × h)

• (h × πr2) + (2 × πr)

• (2 × 2πr) + (πr2 × h)

• (r × πh2) + (2πr × h)

Eugene is wrapping a box that contains a gift for his sister. The dimensions of the box are shown below, where h represents the height, w represents the width, and l represents the length of the box.

Which equation shows how to find the minimum amount of wrapping paper, in square inches, that Eugene will need to cover the entire box?

• 2wl + hw + hl = 2(14 × 5) + (7 × 14) + (7 × 5)

• wl + hw + hl = (14 × 5) + (7 × 14) + (7 × 5)

• 2wl + 2hw + 2hl = 2(14 × 5) + 2(7 × 14) + 2(7 × 5)

• wl + 2hw + 2hl = (14 × 5) + 2(7 × 14) + 2(7 × 5)

What is the surface area of this rectangular prism, in square meters?

• 400

• 302

• 21

• 390

What is the lateral surface area of this prism, in square meters?

• 34

• 340

• 264

• 96

A metal barrel is cut in half to make a horse-watering trough. The dimensions of the original barrel are shown in the diagram below.

About how many cubic meters can the trough hold?

• 0.314

• 1.600

• 2.512

• 5.024

A vase is shaped like a cylinder. It stands inches tall, and its circular base has a 2.5 radius of inches. What is the volume of the vase?

• 20π cubic inches

• 50π cubic inches

• 160π cubic inches

• 200π cubic inches