If f(x)=3x+10x and g(x)=2x-4 find(f+g)(x)

Question

3x+8x+4

15x-4

3x-8x+4

3x+12x-4

Answer 1

The question is asking for the two functions to be added together. This is function notation and f(x) and g(x) represent the y value or the output of the function.

3x + 10x + 2x - 4 Gather the like terms 3x + 10x + 2x = 15x

Therefore, when you add the functions together the result is:

15x - 4