Joseph and his children went into a movie theater and will buy bags of popcorn and
pretzels. Each bag of popcorn costs $8 and each pretzel costs $3.75. Joseph has a
total of $80 to spend on bags of popcorn and pretzels. Write an inequality that would
represent the possible values for the number of bags of popcorn purchased, b, and the
number of pretzels purchased, p.