Explain why a negative divided by a negative is a positive using the "how many groups" perspective of division.

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 expressions equal 9 when x=4 and y=1/3 a. x2+6y b. 2x + 3y c. y2-21x d. 5 (x/2) -3y e. 3x-9y

Abox holds 500 paperclips. after a week on the teacher's desk 239 paperclips remained. how many paperclips were used?