A rectangle has a preimeter of 50 and a length of 20 what is the width

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:

Consider the first four terms of the sequence below. what is the 8th term of this sequence?

This summer the number of tourists in salem increased 4.5% from last years total of 426000. how many more tourists came to salem this summer