High School

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A cable company uses the function [tex]f(h) = 30h + 60[/tex] to calculate the total repair bill, [tex]f(h)[/tex], for [tex]h[/tex] number of hours worked. Find [tex]h[/tex] if [tex]f(h) = 150[/tex].

A. 1 hour
B. 3 hours
C. 4,500 hours
D. 4,560 hours

Answer :

The total cost for the repair is expressed as f(h) = 30h + 60 where h is the number of hours worked. We are given the total cost which will allow us to calculate the number of hours worked. We calculate as follows:

f(h) = 30h + 60
150 = 30h + 60
90 = 30h
h = 3 hours -------->OPTION 2.

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Rewritten by : Barada

Answer: 3 hours


Step-by-step explanation: He is right