2

Set 1: Systems Of Equations (Intermediate)

Explanation

Answer: C

PROBLEM

Solve: 2x + 2y = 22, x + 2y = 15. Find y.

Solve: 2x + 2y = 22, x + 2y = 15. Find y.

A.

5

B.

6

C.

4

✓ Correct
D.

3

Detailed Explanation

Choice C is the best answer. Using elimination or substitution: y = 4

Why others are wrong:
A: 5 is incorrect because it does not satisfy the equation.
B: 6 is incorrect because it does not satisfy the equation.
D: 3 is incorrect because it does not satisfy the equation.