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Mathematics 12 Online
OpenStudy (anonymous):

The disc jockey for the school dance charges $100 per hour for 3 hours plus $50 for each additional 20 minutes. If the disc jockey sends a bill for $450, how many additional minutes did the disc jockey continue to play past the first 3 hours. Please write an equation.

OpenStudy (anonymous):

y=(450-3*100)/50

OpenStudy (anonymous):

played 60 min extra

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