express the relation as the table, a graph and a mapping. then determine the domain and range (3,-2) , (1,0),(-2,4)(3,1)

A20? -foot ladder is placed against a vertical wall of a? building, with the bottom of the ladder standing on level ground 19 feet from the base of the building. how high up the wall does the ladder? reach?

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.

Which is the equation of a line perpendicular to the line with the equation 3x+4y=8