Answer
Net change is 12
Work Step by Step
$f(x) = 3x-2$
$f(1) = 3(1) - 2 = 3 - 2 = 1$
$f(5) = 3(5) - 2 = 15 - 2 = 13$
$f(5)-f(1) = 13 - 1 = 12$
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