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? Responses A 0.140.14 B 7.257.25 C 12.512.5 D 65
To find the constant of proportionality, we need to divide the total amount earned by the total number of hours worked.
The total amount earned when working 12 hours is $87, and the total amount earned when working 9 hours is $65.25.
Therefore, the constant of proportionality is found by dividing the total amount earned by the total number of hours worked:
Constant of proportionality = (87 + 65.25) / (12 + 9) = 152.25 / 21 ≈ 7.25
So, the constant of proportionality that describes this relationship is 7.25.
Therefore, the correct answer is B) 7.25.