Ella is training for a triathlon and needs to swim a certain distance for today's workout. If she swims at the rec center pool, she will complete a 155-yard warmup and then swim laps in a lane that is 45 yards long. If Ella swims at the indoor pool at her gym, she will complete a 113-yard warmup, plus a main set that consists of 48 yards per lap. If Ella swims the correct number of laps, she can complete the same distance in either pool. How many laps will that take? How long will Ella's workout be in total?

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:

Two customers went to a post office. first customer paid $12 for 14 and 5 envelopes the second paid 24.80 for 10 postcards and 15 envelopes. what is cost of each envelope?

The perimeter of a rectangle is greater than or equal to 74 meters. if the length is 25 meters, the minimum width of the rectangle is meters.