Helium is pumped into a spherical balloon at a rate of 2 cubic feet per second. how fast is the radius increasing after 3 minutes? note: the volume of a sphere is given by v=(4/3)πr3

This stem-and-leaf plot represents the heights of the students on ralph’s basketball team. one student’s height is missing from the plot. if the mean height of all the students on the team is 61 inches, what is the missing height? a. 55 in. b. 59 in. c. 61 in. d. 65 in.