Question

Given f (x) = 10 minus 2 x, find f(7).
–4
3
7
56

Answer 1

f(7) = - 4

Explanation:

to evaluate f(7) , substitute x = 7 into f(x)

f(x) = 10 - 2x , then

f(7) = 10 - 2(7) = 10 - 14 = - 4