Question

Let f(x)=x-2 and g(x)=x^2-7x-9 find f(g(-1))

Answer 1

f(g(-1)) = -3

Explanation:

g(-1) = -1² - 7(-1) - 9

g(-1) = 1 + 7 - 9

g(-1) = 8 - 9

g(-1) = -1

f(g(-1)) = -1 - 2

f(g(-1)) = -3