The function f(h) = 45h + 80 of the computer repair is a linear function
A linear function is represented as:
f(h) = mh + c
Where:
By comparison;
45 represents the hourly rate and 80 represents the base cost
We have:
f(h) = 45h + 80
When f(h) = 215, the function becomes
45h + 80 = 215
Subtract 80 from both sides
45h = 135
Divide both sides by 45
h = 3
Hence, the value of h means 3 hours
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