Answer:
f(11) = 78
Explanation:
f(x) = 7(x-1) + 8
f(11)
this means that the problem wants us to find what the value of this function is when x is 11
x = 11
f(11) = 7(11-1) + 8
=7(10) + 8
= 70 + 8
= 78
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