Aaron joins a local gym which has a one time refundable charge of $60.35 and a monthly fee of $45. aaron pays a total of $420.35 at the time of joining. which equation can be used to find the number of months aaron joins the gym for?

420.35=45n+60.35

420.35=45n−60.35

420.35=60.35n−45

420.35=60.35n+45

how many months does aaron join the gym for?

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:

What is the area of the trapezoid shown ?

Me. i can't figure out this question. give an explanation too. .