The length of a rectangular sandbox is 4 feet less than its width, which is represented by x. The area is 45 square feet. Which equation can be used to find the area of this sandbox? 1.x^2+4=45
2.x(x+4)=45
3.x(x-4)=45
4.x(2x+4)=45

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:

You eat $0.85 for every cup of hot chocolate you sell. how many cups do you need to sell to earn $55.25

E. which of the following is not a possible probability? a. 25/100 b. 1.25 c. 1 d. 0