Jay and Talia are hiking different trails. In the middle of their hikes, jay is 20 feet below sea level and Talia is the same number of feet above sea level. Graph Jays elevation at -20 on the number line. Then graph Tailias elevation on the number line. Click on the number line to identify the locations of the points!

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 ordered pair (c,d) is a solution to the given system of linear equations- c+2d=13 -9c-4d=-15

Which of the following is not a subset of {1,2,3}?