Answer:


Step-by-step explanation:
Given system of equations:

To solve by the method of substitution, substitute the first equation into the second equation and rearrange so that the equation equals zero:

Factor the quadratic:

Apply the <u>zero-product property</u> and solve for x:


Substitute the found values of x into the <u>second equation</u> and solve for y:


Therefore, the solutions are:


-6x-x^2-8 = -(x+2) x (x+4)
(This is if you are factoring the expression)
Answer:
It's D
Step-by-step explanation:
2t - 30(
) = 20
2t -
(
) = 20
2t -
= 20
2t - 6 = 20
2t - 6 + 6 = 20 +6
2t = 26
= 
t = 13