Your parents do some research of their own, and find another surf school: Moondoggie’s Hang Ten School,which offers group rates. They will charge $20 per person for unlimited hours, if there are up to six students. They’ll even offer a discount of $1 per person for every student in excess of 6.A. Write a quadratic equation to model this information.

I do not believe you can model this with a quadratic equation. Once you get to 6, you have an inflection point. I'll be interested to see if there is a better answer.

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