Question 9 • (OC27) MATH COLL ALGEBRA-1200710-S1-Degele-VOL7006P
Break-even occurs when Zorah’s total costs equal her tips, so solve 120 + 10x = 25x. Subtract 10x from both sides to get 120 = 15x, then divide by 15: x = 8. Zorah must play for 8 hours, which is choice C.
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