Question

Mary spent $45 at the mall. She bought lunch for $9 . She bought 3 shirts at x dollars

each. Which of the following equations could be used to find x ?

Answer 1

3x + 9 = 45

Explanation:

3 shirts at x dollars each cost 3x

lunch costs 9

altogether she spent 3x + 9

she spent 45

3x + 9 = 45