at a concession stand five hot dogs and four hamburgers cost $12.25 four hot dogs and five hamburgers cost $12.50 find the cost of one hot dog and the cost of one hamburger

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 results from adding the equations in this system? x+6y=9 and -x+2y=-15

How do i solve uniform motion problems?