If m angle acb=30 and m angle a=80 , find m angle b

Jim makes $10.35 per hour. write an equation that jim can use to calculate his pay.

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.

The length of a rectangular piece of land is 92 yards more than three times its width. the perimeter is 760 yards. find its dimensions.