Expression for Word Problems

Which expression matches: twice a number, decreased by four.

• 2x - 4

• x - 4

• (x ÷ 2) – 4

• 2x + 4

A pizza delivery driver earns $8 an hour and works h hours per day. He also spends $20 a day on gas. How much will the driver earn in one day?

• 8h - 20

• 8h + 20

• 8 + 20

• 8 - 20h

There are r rows of chairs with 7 chairs in each row. Choose the expression that shows the number of chairs in total.

• 7r

• 7 ÷ r

• r - 7

• r + 7

1. A pizza delivery driver earns $8 an hour and works h hours per day. He also spends $20 a day on gas. How much will the driver earn in one day?

• 8h – 20

• 8h + 20

• 8 + 20

• 8 – 20

Your mom wins $100 on a scratch-off ticket. She wants to split in between you and your sisters. How much will each of you receive if there are c children?

• 100 - c

• 100 + c

• 100 ÷ c

• 100c

Translate this sentence into an equation.
72 is the product of 8 and a Steve's age.
Use the variable h to represent Steve's age.

• 72 = 8 + h

• 72 = 8h

• 72 = 8 - h

• 72 = 8/h

Mallory bought pizza and soda for a party. If she spent $12.57 on the sodas and $10.95 for each pizza, how many pizzas did she buy if her total is $89.22?

• 10.95x + 12.57 = 89.22

• 12.57x + 10.95 = 89.22

• 89.22x -10.95 = 12.57

• 12.57 + 10.95 = 89.22

Joan needed $100 to buy a graphing calculator for her math class. Her neighbor will pay her $5 per hour to babysit and her Father gave her $10 for mowing the lawn. Which inequality represents the minimum amount of hours she will need to babysit in order for her to buy her calculator?

• 5x + 10 ≥ 100

• 5x - 100 ≥ 10

• 10x + 5 ≤ 100

• 5x + 10 > 100

What is the expression for "six less than y"

• 6- y

• 6 < y

• y - 6

Kelly has some money she has already saved. After mowing two lawns on Saturday, she adds $40 to her savings. How much money has Kelly saved altogether? Let s represent the amount of money she already has in savings. What information is needed in order to help write an algebraic expression?

• s stands for the amount of money she already saved.

• Kelly likes to mow lawns

• The words "she adds" lets me know to write a + sign.

• She added $40 to her savings.

• Kelly worked on Saturday.