F(x) = - 3x ^ 2 + 3x + 7 Find f(8)

f(8) = -161

Step-by-step explanation:

Plugin 8 to each x value to get to this equation, -3(8)^2 + 3(8) + 7.  Once you have done that, make sure to multiply 8 to the second power and by 3 separately to get to this equation -3(64) + 24 + 7.  Combine 24 and 7 together to get 31 and multiply 64 by -3 to get -192.  Add 31 now to get -161 as your answer.

b) 36

step-by-step explanation:

18 times 2 is 36

-22

times both sides by 2, times () by 8, add alile terms, move terms, add alike and caculate divide both sides by 3