Question

Trina earns $28.50 tutoring for 3 hours. Write an equation relating her earnings m to the number of hours h she tutors. Assuming the situation is proportional, how much would Trina earn tutoring for 2 hours? for 4.5 hours?

Answer 1

first find the unit rate
28.50 divided by 3 = 9.50
Trina earns $9.50 for every hour she tutors

m = 9.5h

now just substitute 2 for h

m = 9.5(2)
m = $19

now substitute 4.5 for h

m = 9.5(4.5)
m = $42.75

Trina earns $19 for 2 hours and $42.75 for 4.5 hours

i hope this helps!!