Chapter 1, Problem 37RE

Business Pricing. A sporting goods store sells tennis rackets that cost $\text{\$130}$ for $\$208$ and court shoes that cost $\$50$ for $\text{\$80}\text{.}$

(A) If the markup policy of the store for items that cost over $\text{\$10}$ 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 $\text{\$120?}$

(C) What would be the cost of a pair of cross-country skis that had a retail price of $\text{\$176?}$

(D) What is the slope of the graph of the equation found in part (A)? Interpret the slope

relative to the problem.