Question

If f(x) = x + 4 and g(x) = x, what is (gºf)(-3)?

Answer 1

(gºf) means solve f(x) first, then use that for g(x)

In the equation for f(x) replace x with -3:

f(x) = x +4 = -3 +4 = 1

Now replace the x in the equation for g(x) with 1

g(x) = x = 1