Answer:
f(11) = 78
Step-by-step 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
