Savannah was paid $87 for 12 hours of babysitting and $65.25 for 9 hours. What is the constant of proportionality that describes this relationship?

Question

Responses
A 6565
B 0.140.14
C 7.257.25
D 12.512.5

Answer 1

To find the constant of proportionality, we need to divide the total payment by the total number of hours worked.

Total payment = $87 + $65.25 = $152.25

Total number of hours worked = 12 + 9 = 21

Constant of proportionality = Total payment / Total number of hours worked

= $152.25 / 21

= $7.25

Therefore, the answer is option C: 7.25.