What is the sum of
(2 – 8x2 – 15)
and
(2 + 12x – 3x)?

In order for the function to be linear, what must m be and why? m = 22 because the rate of change is 1. m = 20 because the rate of change is 3. m = 22 because the rate of change is -1. m = 20 because the rate of change is -3.