Find (fg)(x) where: f(x)=3x^2-4 g(x)=x^3+5x)

3(x^3 + 5x)^2 - 4   (please mark brainliest)

Step-by-step explanation:

plug g equation into x values of f equation

f equation = 3(x)^2 - 4

                        ^g goes here

So

3(x^3 + 5x)^2 - 4

       ^ g goes here

i can't see the picture : /

215.92 dollars is the answer