a 5th grade class with 32 student's are going on a field trip they want to rent vans each seat has a maximum of 7 students whats the least number of vans that will be needed

5 buses

Step-by-step explanation:

You can do 32:7, which gives you about 4.6, but you can't have a remainder, because you need everyone on a bus, so you need 5 buses. Even though the 5th bus won't be completely filled, 4 buses wouldn't work, because you still have some people left over who aren't on a bus.

5 because you can't have less. you'd leave students behind if less.