Which of these equations represent functions where x is the input and y is the output?
Select each correct answer.
2. Solve this equation for x.

Enter your answer in the box.
0 5(5 7 ) 8 (4 6) . − =− + x x
A.
B.
C.
D.
E.
x = 2
y = 2
y x = 2
x y = 2
x y + = 2