Practice problem
If f(x)=2xf(x)=2xf(x)=2x and g(x)=2x+1g(x)=2x+1g(x)=2x+1 then what is (f+g)(x)(f+g)(x)(f+g)(x)?
−1-1−1
4x+14x+14x+1
4x2+2x4x^2+2x4x2+2x
12x−1\frac12x^{-1}21x−1
Type a concept, like “slope” or “photosynthesis”.
