# algebra

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Fund Raising. A charity organization wishes to raise at least \$12,000 from a movie premiere to be held at a theatre with 800 seats. The ticket prices are to be \$20 and \$15, with at least 500 tickets to be sold at \$20.
a. If x tickets at \$20 and y tickets at \$15 are sold, what is the system of inequalities involving x and y?
b. Draw a sketch of the graph of the system in part (a) that shows the region of permissible values of x and y.

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