Math question. Please help.

Fa bus driver leaves her first stop by 7: 00 a. m., her route will take less than 37 minutes. if she leaves after 7: 00 a. m., she estimates that the same route will take no less than 42 minutes. which inequality represents the time it takes to drive the route, r?

:24% of students in a class are girls. if there are less than 30 students in this class, how many students are there? how many girls are there?

Find the nonpermissible replacement for binthis expression. b2/5b +5