In classroom of 30 students, 15 students take notes in pencil, 20 students take notes in pen,
and 8 students take notes in pen and pencil.
How many students do not use a pen or pencil
to take notes?

Which of the following is not a subset of {1,2,3}?

Graph the equationy=x^2 -[tex]y = x^{2} - 2[/tex]

There are 3232 forwards and 8080 guards in leo's basketball league. leo must include all players on a team and wants each team to have the same number of forwards and the same number of guards. if leo creates the greatest number of teams possible, how many guards will be on each team?