Practice problem
Let f(x)=3xf(x) = 3xf(x)=3x and g(x)=5xg(x) = 5xg(x)=5x. What is (fg)(x)(fg)(x)(fg)(x)?
15x215x^215x2
15x15x15x
8x8x8x
8x28x^28x2
35x35x35x
Type a concept, like “slope” or “photosynthesis”.