20 pts the table shows the heights of students in a group.

student height (in inches)
a 49
b 48
c 41
d 45
e 47

what is the mean height of the students in the group?
41 inches
43 inches
46 inches
49 inches

Find the surface area of the prism formed by the net

You drop a rubber ball off the roof of a 50 meter high building onto a paved parking lot. it bounces back up with every bounce, but not quite all the way back up to you. after the first bounce it bounces back only 80 percent of the distance it was dropped from. the pattern continues, meaning after every bounce it comes up to just 80 percent of the previous maximum height. so if before the first bounce the height is 50 meters, what height does the ball reach after the fifth bounce? round your answer to one decimal place and chose the correct response from the choices below:

Just tell me how to set up the equation.