Question

6. let f(x)=x+5 and g(x)=x^2. Find (g*f)(4)

a.9
b.81
c.21
d.1

Answer 1

B

Explanation:

(g*f)(4) means to find g(f(4)). This is a composite which asks one equation to be substituted into another equation.

`g(f(4)) = (4+5)^2\\g(f(4)) = 9^2\\g(f(4)) = 81`