When a triangle is reflected over the x-axis and translated left 4 units, what are the new points to the triangle?

Rectangle pqrs has length a and width 4b. the x-axis bisects ps and qr what are the coordinates of the vertices

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.

How many solutions does the nonlinear system of equations graphed bellow have?