Chapter 1, Problem 39RE

Price demand. The weekly demand for mouthwash in a chain of drug stores is 1,160 bottles at a price of $\text{\$3}\text{.79}$ each. If the price is lowered to $\text{\$3}\text{.59,}$ the weekly demand increases to $1,320$ bottles. Assuming that the relationship between the weekly demand $x$ and price per bottle $p$ is linear, express $p$ in terms of $x$. How many bottles would the stores sell each week if the price were lowered to $\text{\$3}\text{.29?}$