Two brothers went shopping at a back to school sale where all shirts and shorts were the same price. the younger brother spent $175 on 7 new shirts and 7 pairs of shorts. the older brother purchased 6 new shirts and and 7 pairs of shorts and paid a total of $165. how much did one shirt cost?

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: