The cost to rent a moving van is $38 plus an additional $20 per hour. For $218, what is the maximum number of
hours that a moving van can be rented for?

Find two rational expressions that have the difference of 2-n/n-4

Before simplifying, how many terms are there in the expression 2x - 5y + 3 + x?

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.