Answer:
-7
Step-by-step explanation:

it is possible because x is just a letter representing the unknown nos
Answer:
<h2>the answer is <u><em>
56 DAYS</em></u></h2>
Step-by-step explanation:
8 x 7 = 56
:)
I cant really see that- could you tell me what that is?
Answer:
-9
Step-by-step explanation:
You have to plug 8 into the formula for x. f(8) = -2(8)+7 = -16+7 = -9