Please help ill mark brainliestO

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.

Just tell me how to set up the equation.

In the xy-plane, if the parabola with equation passes through the point (-1, -1), which of the following must be true?