find the equation to the plane through the point ( 2,2,1) and (9,3,6) and perpendicular to the Plane 2 X + 6 Y + 6Z = 9

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?

Inez has a phone card. the graph shows the number of minutes that remain on her phone card a certain number of days.

[15 points, algebra 2]simplify the complex fraction and find the restrictions.