a pyramid whose base is an equilateral triangle 100 feet on a side and whose finished height is 80 feet is under construction. but due to economic realities, construction is stopped at a height of 57 feet. the resulting structure looks like the bottom part of the pyramid on the left-hand side of the back of a u. s. one dollar bill.

a. measure the volume of this truncated pyramid.
b. measure the volume of the unfinished part.

Plot the points (0,6), (3,15.8), and (9.5,0) using the graphing tool, and find the function

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:

How is this equation completed? i cannot find any examples in the book.