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9

Set 3: Systems Of Equations (Intermediate)

Explanation

Answer: C

PROBLEM

Solve: 2x + 5y = 28, 4x + y = 38. Find y.

Solve: 2x + 5y = 28, 4x + y = 38. Find y.

A.

1

B.

4

C.

2

✓ Correct
D.

3

Detailed Explanation

Choice C is the best answer. Using elimination or substitution: y = 2

Why others are wrong:
A: 1 is incorrect because it does not satisfy the equation.
B: 4 is incorrect because it does not satisfy the equation.
D: 3 is incorrect because it does not satisfy the equation.
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