7
Answer: BSet 2: Systems Of Equations (Advanced)
Explanation
PROBLEM
Solve: 2x + 4y = 36, 3x + 3y = 42. Find y.
Solve: 2x + 4y = 36, 3x + 3y = 42. Find y.
A.
3
B.✓ Correct
4
C.
6
D.
2
Detailed Explanation
Choice B is the best answer. Using elimination or substitution: y = 4
Why others are wrong:
A: 3 is incorrect because it does not satisfy the equation.
C: 6 is incorrect because it does not satisfy the equation.
D: 2 is incorrect because it does not satisfy the equation.