Ben is building a storage box for the sale of his boat. The left side of the box is 3 feet long and the right side of the box is 4 feet long. The left and right side form a right angle. What is the length of the base of the box?
A. 5 feet
B. 4.5 feet
C. 7 feet
D. 3.5 feet.

For one history test, keith had to answer 40 questions. of these 40 questions, keith answered 28 of them correctly. what percent did keith get on his history test? round your answer to the nearest tenth if necessary

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:

Which equation represents a line that is parallel to the line whose equation is 3x-2y=7( show all work)