+129849 f(x) = 3x-7 and g(x) = -2x - 6. Find (f * g)(4)
[f * g](4) means that we want to multipy these two functions together and then evaluate the resulting function for x = 4 ....so we have
[3x - 7] * [ -2x - 6] = -6x^2 + 14x -18x + 42 = -6x^2 - 4x + 42
Now....replace the x's with 4
-6*4^2 - 4(4) + 42 =
-96 - 16 + 42 =
-70
