Question

5. Suppose f(x) = 5x - 1 and g(x) = x2 + 2

a.
Find f(g(x))
b) Find x such that f(g(x) = 29

Answer 1

f(g(x)=10x+9

x=2

Explanation:

f(g(x))= 5(2x+2)-1

10x+10-1

f(g(x))= 10x-9

10x-9=29

10x=20

x=2