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?

To find the constant of proportionality, we need to find the ratio of the amount paid to the number of hours.

For the first scenario, the ratio is $87 / 12 hours = $7.25/hour.

For the second scenario, the ratio is $65.25 / 9 hours = $7.25/hour.

Since the ratio is the same in both scenarios, the constant of proportionality that describes this relationship is $7.25/hour.