2
Answer: BSet 4: Systems Of Equations (Intermediate)
Explanation
PROBLEM
Solve: 5x + 2y = 50, 5x + 3y = 55. Find y.
Solve: 5x + 2y = 50, 5x + 3y = 55. Find y.
A.
4
B.✓ Correct
5
C.
3
D.
6
Detailed Explanation
Choice B 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.
C: 3 is incorrect because it does not satisfy the equation.
D: 6 is incorrect because it does not satisfy the equation.