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Question

Maria charges a $10 base fee, plus $15 per hour for babysitting.

Which equation can be used to find h, the number of hours of babysitting that Maria will charge $160?
Responses
A 15h – 10 = 16015 h – 10 = 160
B 10h + 15 = 16010 h + 15 = 160
C (10 + 15)h = 160(10 + 15)h = 160
D 10 + 15h = 16010 + 15 h = 160

Answer 1

To find the number of hours (h) that Maria will charge $160, we need to set up an equation based on her pricing structure.

Maria has a base fee of $10 and charges an additional $15 per hour. Therefore, the total charge can be expressed as:

Total charge = Base fee + (Hourly rate × Number of hours) Total charge = $10 + $15h

We want to find the equation that equals $160:

\[ 10 + 15h = 160 \]

This means the correct response is:

D: 10 + 15h = 160