Practice problem
If f(x)=3xf(x)=3^xf(x)=3x and g(x)=4xg(x)=4xg(x)=4x, what is f(x−1)+g(y)f(x-1)+g(y)f(x−1)+g(y)?
3(x−1)+4y3^{(x-1)}+4y3(x−1)+4y
3(x−1)+4x3^{(x-1)}+4x3(x−1)+4x
3y+4(x−1)3^y+4(x-1)3y+4(x−1)
3x+4x3^x+4x3x+4x
Type a concept, like “slope” or “photosynthesis”.
