Which expression is equal (in picture)

The expression equal to the problem given is the last answer 3(x-2)(x+5)/2x(x-5).

Step-by-step explanation:

In order to solve the problem, you first need to factor your quadratic equations in order to simply the expression.  Starting with 3x^2 +12x-15, we can factor that into 3(x+5)(x-1).  4x^2 +4x - 8 would factor to 4(x+2)(x-1).  Between these simplified expressions, we can cancel out (x-1) from the numerator and denominator.  For the next fraction, we can factor 2x^2 - 8 into 2(x-2)(x+2) and factor x^2 - 5x into x(x-5).  When we see the factored fraction expressions side by side, we can then cross-simplify the 2 and 4 as well as the (x+2) from the denominator of the first fraction and the numerator of the other.  This leaves us with a final combined expression of 3(x-2)(x+5)/2x(x-5).

f(x) = y

f(-3) = -5

step-by-step explanation:

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.