Answer:
The answer is B! All I did was take a screenshot of your question and put on my page.
Answer:

Step-by-step explanation:
Given

Required
Solve for x

Add
to both sides


Take LCM


Multiply both sides by 

Evaluate the left hand side


Divide 28 by 4

Answer:
Please see attachment
Step-by-step explanation:
Please see attachment
Answer:
see explanation
Step-by-step explanation:
let y = f(x) and rearrange making x the subject, that is
y =
x + 4 ( multiply through by 2 to clear the fraction )
2y = x + 8 ( subtract 8 from both sides )
2y - 8 = x
Change y back into terms of x with x =
(x) , then
(x ) = 2x - 8
(4) = 2(4) - 8 = 8 - 8 = 0
-(-3)^2-4(3)
Basically a - outside the parentheses means that you are to multiply by a -1. So the first pet would be 3^2 which is 9 and then 4*3=12 so, 9-12= -3