5
Answer: DSet 3: Systems Of Equations (Intermediate)
Explanation
PROBLEM
Solve: 5x + 2y = 55, 4x + y = 41. Find y.
Solve: 5x + 2y = 55, 4x + y = 41. Find y.
A.
4
B.
3
C.
6
D.✓ Correct
5
Detailed Explanation
Choice D is the best answer. Using elimination or substitution: y = 5
Why others are wrong:
A: 4 is incorrect because it does not satisfy the equation.
B: 3 is incorrect because it does not satisfy the equation.
C: 6 is incorrect because it does not satisfy the equation.