Pls me need right no
type the correct answer in each box. use numerals instead of words. if necessary, use / for the fraction bar(s).
charlie runs a book rental business. he currently charges $3 per book and rents out an average of 38 books a day.

according to a study, for every 50¢ increase in rental price, the average business can expect to lose 4 rentals a day.

complete the equation that models this scenario, where b(x) is the revenue generated and x is the number of 50¢ price increases.