Solve this equation (if it shows up)

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?

John has 1/2 pound of oranges to share with julie. if they share the oranges equally, how much will each of them have?

The equation of a parabola is given. y=18x2+4x+20 what are the coordinates of the focus of the parabola?