Mr. shaw need 27 markers. he can buy them in pack of 10 markers or as single markers. what are all the different ways. mr. shaw can buy the markers? find a pattern to solve.

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.

Extra points! find the missing dimension! need asap

Write an equation of the line that passes through the point (2, 3) and is perpendicular to the line x = -1. a) y = 1 b) y = 3 c) y = 0 eliminate d) y = -3