Which of the following is a solution to the inequality below?

–2w > –4

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.

The graph of y = ax^2 + bx + c is a parabola that opens up and has a vertex at (0, 5). what is the solution set of the related equation 0 = ax%2 + bx + c?

What are the coordinates of the midpoint of ab? ,1/2) /2,-1) ,-3/2) /2,-2)