Plot a point in quadrant 1. label it point E. what are the coordinates of point E

The system of equations graphed below has how many solutions?

Two planes leave an airport at the same time, one flying east, the other flying west. the eastbound plane travels 20 mph slower. they are 1600 mi apart after 2 hr. find the speed of each plane.

If 3 3/4 lb. of candy costs 20.25 how much would 1lb. of candy cost