1.Simplify the expression (3/7)^2

Question

A.3/7
B.6/14
C.9/49
D.5/9

2.Which is a solution of the equation y=5x+3?
A.(5,28)
B.(28,5)
C.(4,20)
D.(3,19)

3.Solve the equation.
-15=a/5
A.a=-3
B.a=-20
C.a=-10
D.a=-75

4.Of 158 consumers polled, some like only action movies, some prefer just horror movies, and some like both. If 43 people like only action, and 62 like both, how many people prefer only horror movies?
A.58
B.55
C.53
D.43

I think #1 is C, #2 is A, #3 is C, and #4 is C. Please check my work and correct me if im wrong.

Answer 1

1C
2A
3D (multiply by 5, not add)
4C

Not too bad.