Acomputer is programmed to accept a number, add 4 to it, and then multiply the sum by 5. if x represents the number first fed into the machine, and the result of the first run is then fed back into the computer, what will the result of the second run be?
a. 5x+40
b. 5x+120
c. 25x+40
d. 25x+104
e. 25x+120

Find an equation of the line perpendicular to the graph.

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:

Asurvey of 45 teens found that they spent an average of 25.6 hours per week in front of a screen (television, computer, tablet, phone, based on the survey’s sample mean, which value could be the population mean? 2.3 hours 27.4 hours 75.3 hours 41.5 hours