Unit 4 Review 2

Aziz bought a house plant that measured 5 inches tall in a 10-inch-tall pot. Every month for 3 months, the plant doubled in height. After 3 months, Aziz clipped 8 inches of growth off the top of the plant. The height of the plant above the floor, in inches, is equal to the expression below. 10 + 5 × 2³ – 8 How many inches above the floor is the top of the plant after 3 months?

• 10

• 42

• 112

• 1,018

Evaluate

• 
• 
• 
• 

Jackie is having a cookout, and wants to serve her guests hotdogs from the grill. Hotdogs come in a package of 10 and buns come in a package of 8. How many total hotdogs will Jackie be able to serve if she wants to buy the least number of packages of hotdogs and buns and wants no leftovers?

• 20

• 40

• 80

• 120

How many packages of hot dogs and packages of buns would Jackie need to purchase to ensure she has exactly enough (no leftovers) to serve at the cookout?

• Jackie will need to buy 2 packages of hotdogs and 3 packages of buns.

• Jackie will need to buy 3 packages of hotdogs and 4 packages of buns.

• Jackie will need to buy 4 packages of hotdogs and 5 packages of buns.

• Jackie will need to buy 5 packages of hotdogs and 6 packages of buns.

Which expression gives the total cost of tickets for x students and y adults?

• (x + y)

• (2x + 5y)

• 7(x + y)

• 10xy

How much would it cost for a family of 2 adults and 3 students to attend the play?

• A. $5

• B. $7

• C. $16

• D. $35

Lindsay wishes she could have four times the amount of jelly beans Lisa has. Which expression shows Lindsay's wish?

• 4 + b

• 4 - b

• 
• 4b

Mr. Delaney's class sold balloons to raise money for their class trip. They made $1.75 on each balloon sold. The school also gave the class $100 towards the cost of the trip. The total amount of money the class raised can be found using the expression below in which b is the number of balloons sold. 1.75b + 100 How much money did Mr. Delaney's class raise if they sold 184 balloons?

• $324

• $372

• $422

• $497

Select three expressions that are equivalent to 16x + 12y.

• 2(16x + 6y)

• 8x + 8x + 6y + 6y

• 9x + 3x + 3x + x + 6y + 5y + y

• 4(4x + 3y)

• 16(x + 12y)

The sides of a square are each 2x + 8 inches long. The expression 4(2x + 8) gives the perimeter, in inches, of the square. Which of the following is an equivalent expression for the perimeter of the square?

• 40x

• 6x + 12

• 8x + 32

• 14x