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Answer:
f(12) = - 25
Explanation:
to evaluate f(12), substitute x = 12 into f(x)
f(x) = 6(x - 17) + 5 , then
f(12) = 6(12 - 17) + 5
= 6(- 5) + 5
= - 30 + 5
= - 25
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