Of the 520 students in a school 26 live outside the school district what percent of the students live outside of the school district

Do u just plot the numbers on the graph like (1,

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.

What is the image of c for a 90° counterclockwise rotation about a? (3, 7) (-1, 3) (7, 3)