Select ALL sets that are functions: (-2,1), (0.5), (-6, 4), (-2,3)
(-6, 4), (8,3), (2, 2). (10,-5)
(-2,1), (0.5), (-6, 4), (-2, 1)
(5, 16), (6, 20), (7, 25), (9, 10)

Determine whether the following statements are true and give an explanation or counterexample. bold a. when using the shell method, the axis of the cylindrical shells is parallel to the axis of revolution. bold b. if a region is revolved about the y-axis, then the shell method must be used. bold c. if a region is revolved about the x-axis, then in principle it is possible to use the disk/washer method and integrate with respect to x or the shell method and integrate with respect to y.

:24% of students in a class are girls. if there are less than 30 students in this class, how many students are there? how many girls are there?

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?