Your new computer cost $2,000 but it depreciates in value by about 20% each year write an equation that would indicate the value of the computer at t years

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.

Find the values of y: 3y^3(y^2+ 2/3y)=0

In a column proof the right column states your reasons