Question

carla and her sisters each earned 9 dollars for babysitting. which expression represents how much carla and her sisters earned in total? 9 + x 2(9 + x) 9x 2x + 9

Explanation:

Step1: Identify the variables

Let $x$ be the number of Carla and her sisters. Each earned 9 dollars.

Step2: Use multiplication for total - amount

The total amount they earned is the amount per - person times the number of people. So the total amount is $9\times x=9x$.

Answer:

$9x$