Question

An appliance company uses the function f(h) = 40h + 120 to calculate the total repair bill, f(h), for h number of hours worked. Find h if f(h) = $200.

8,120 hours
8,000 hours
5 hours
2 hours

Answer 1

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Answer 2

f(h) = 40h + 120....when f(h) = 200

200 = 40h + 120
200 - 120 = 40h
80 = 40h
80/40 = h
2 = h <=== 2 hrs