Angle A and Angle B are supplementary angles. Angle A = 2 (50 -9)
Angle B = 42 +2
Solve for x and find the measure of Angle B.

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.

Nine more than four times a number is the same as one less than twice the number. find the number?

The weight v of an object on venus varies directly with its weight e on earth. a person weighing 120 lb on earth would weigh 106 lb on venus. how much would a person weighing 150 lb on earth weigh on venus?