Question

If f(x) = xand g(x) = 2x + 7, what is
f(g(x)] when g(x) = 11?

Answer 1

29

Explanation:

Since f(x) = x, then where there is x, we will substitute g(x). So since f(x) = x, then f[g(x)] = 2x + 7, since there is only on x.

Now, we substitute the value of x, 2(11) + 7 = 22 + 7 = 29