What is the value of f(g(5)) ?

Question

f(x) = 3x2 - 4

g(x) = -3x2 + 69

What is the value of f(g(5)) ?

Answer 1

So, Jimmy, we work this from the inside out.

 

g(5) = -3(5²) + 69 = -75 + 69 = -6

 

f(-6) = 3((-6)²) - 4 = 108 - 4 = 104

 

Hope this helps!