4
Answer: CSet 4: Linear Equations (Intermediate)
Explanation
PROBLEM
Solve for x: 5x + 3 = 78
Solve for x: 5x + 3 = 78
A.
16
B.
14
C.✓ Correct
15
D.
17
Detailed Explanation
Choice C is the best answer. Solve step by step: x = 15
Why others are wrong:
A: 16 is incorrect because it does not satisfy the equation.
B: 14 is incorrect because it does not satisfy the equation.
D: 17 is incorrect because it does not satisfy the equation.