Business—Pricing. A sporting goods store sells tennis rackets that cost $130 for $208 and court shoes that cost $50 for $80.
(A) If the mark up policy of the store for items that cost over $10 is linear and is reflected in the pricing of these two items, write an equation that expresses retail price R in terms of cost C.
(B) What would be the retail price of a pair of in-line skates that cost $120? $192
(C) What would be the cost of a pair of cross-country skis that had a retail price of $176? $110
(D) What is the slope of the graph of the equation found in part (A)? Interpret the slope relative to the problem.
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