A baseball team plays in a stadium that holds 56000 spectators. With the ticket price at $11 the average attendance has been 25000. When the price dropped to $8, the average attendance rose to 28000. Find a demand function D(q), where q is the quantity/number of the spectators. (Assume D(q) is linear) D(q)= (For best results, keep answers in fraction form, not decimals)

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