Answer:
d.
Step-by-step explanation:
The given functions are
and
We want to find the composition of the f and g.
We substitute into to obtain;
This simplifies to;
Hence the correct choice is d.
12 - b = -2
12 + 2 = b
14 = b
I assume you mean (x^2 - 15*x - 36) / (5x - 60). Notice that you can factor a 5 out of the denumerator (the bottom), to get 5 * (x - 12). You could then try factoring the numerator (the top part), and you will probably be able to cancel out a term on top and bottom.