Tom collects black and white model cars. he has 72 in all. he has eight more than three times as many black ones than white ones. how many black cars does tom have in his collection

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?