Math Expressions

What is a word problem for the equation?

Patti sets up dominos in rows of 30. If she uses a total of 720 dominos, how many rows does she set up?

• 30 ⋅ 30 = r

• 720 ⋅ r = 30

• 30 ⋅ r = 720

• 720 ⋅ 30 = r

Sami makes 80 glasses of lemonade for her lemonade stand. It costs Sami $0.52 to make each glass of lemonade, and she sells each glass for $1.00. How much profit will Sami make on the 80 glasses?

• $25.40

• $33.60

• $38.40

• $41.60

Define a variable and write a verbal model and an equation. Then solve the equation and check the solution using substitution. Joella makes $12.75 per hour. This is $2.50 more than her younger sister makes per hour. How much does Joella's sister make per hour?

Choose the algebraic expression that matches the verbal phrase.

• A) 2x + 3

• B) x^2 - 4

• C) 5 - x

• D) 3x + 7

Solve (just enter the number as your answer)

a - 97 = 125

Solve (just enter the number as your answer)

3x + 7 = 34

Solve (just enter the number as your answer)
\frac{2x}{3}\ +\ 5\ =17