A) Christiana makes $14 per hour working at the roller-skating rink. She needs to make $130 to pay her

car insurance. How many hours should she work if she receives an $18 tip for hosting a birthday party
that day? (1 point)

1 answer

To determine how many hours Christiana needs to work, we first calculate how much money she must earn from her hourly wage after accounting for the tip she will receive.

  1. Total amount needed: $130 (for car insurance)
  2. Tip received: $18

First, we subtract the tip from the total amount needed:

\[ 130 - 18 = 112 \]

Now, we need to calculate how many hours she must work to earn the remaining $112 at her hourly wage of $14 per hour.

To find the number of hours, we divide the amount needed by the hourly wage:

\[ \text{Hours needed} = \frac{112}{14} \]

Calculating the above gives:

\[ \text{Hours needed} = 8 \]

Therefore, Christiana should work 8 hours to make the required amount after receiving the tip.