Answer:

Step-by-step explanation:
Given
--- Flow rate of the shower
--- Drain rate of the bathtub
-- Bathtub size
Required
Determine the maximum time of shower
First, we calculate the rate at which the bathtub fills.



The maximum time of shower is:


It is the first one because fist you reflect it to the right across the y axis, then you reflect it down across the x axis, and last but not least, you reflect it left across the y axis where it is now
hope this is helpful! :)
Because the more years you go without receiving it the more it comes out to after you cash out. It starts to add up year by year :)
He saves $124.90 because $389.90 - $265.00 = 124.90 and so that is the difference in the prices which is the answer.