Question

Let f(x) = x + 2 and g(x) = x2. Find (gºf)(-5).

Answer 1

f(x) = x + 2

g(x) = x^2

(gºf) (-5) = g(f(-5))

(gºf) (-5) = (-5+2)^2

(gºf) (-5) = (-3)^2

(gºf) (-5) = 9