Please help it’s for a big graded test

An unknown number of kids and buses are getting assigned. when assigning 4 kids to each bus, there are 2 kids that aren't placed in a bus. when assigning 8 kids to each bus, there are 2 empty buses. how many total kids are there?

Which equation represents the partial sum of the geometric series?

Mr. walker is looking at the fundraiser totals for the last five years , how does the mean of the totals compare to the median?