Aused book store buys a hardback book for $1.50 and then sells it for $5. over time,
the store sells the same number of books it buys. the store manager can use the
equation p(x) = 5x - 1.5x to determine the store's profit, p(x), where x is the
number of books that the store sells. which statement about the book store is true
based on the profit equation?