Can I get some help pleaseee it is really important I have been stuck on this question forever now

The common ratio in a geometric series is 4 and the first term is 3
Find the sum of the first 8 terms in the series

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:

On a piece of paper graft y+2> -3x-3 then determine which answer matches the graph you drew

Which equation represents a direct linear variationa. y=x2b. y=2/5xc. y=1/xd. y=x+3