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Answer: ASet 2: Systems Of Equations (Advanced)
Explanation
PROBLEM
Solve: 4x + 5y = 63, 2x + 2y = 30. Find y.
Solve: 4x + 5y = 63, 2x + 2y = 30. Find y.
A.✓ Correct
3
B.
2
C.
5
D.
4
Detailed Explanation
Choice A is the best answer. Using elimination or substitution: y = 3
Why others are wrong:
B: 2 is incorrect because it does not satisfy the equation.
C: 5 is incorrect because it does not satisfy the equation.
D: 4 is incorrect because it does not satisfy the equation.