How many terms are in the expression shown below?
a2 - ab + 8b + b2 - 1

2

3

4

5

Itook a better photo of the question so y’all can see it i hope it’s a fine photo

Which function is shown in the graph below?

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?