SOLUTION: Sonya's earnings are directly proportional to the number of hours she tutors math. If she earns $422.50 when she tutors 13 hours, what will she earn if she tutors 28 hours?

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Question 37722: Sonya's earnings are directly proportional to the number of hours she tutors math. If she earns $422.50 when she tutors 13 hours, what will she earn if she tutors 28 hours?
Answer by Nate(3500) About Me  (Show Source):
You can put this solution on YOUR website!
Define the variables:
e=earnings
h=numbers of hours worked
Equation:
e%2Fh
So:
422.5%2F13=e%2F28
910=e multiply