Simplify the expression 2x − 6y + 3x2 + 7y − 14x.

The measure of one angle of an octagon is two times smaller that of the other seven angles. what is the measure of each angle?

You earn a 12% commission for every car you sell. how much is your commission if you sell a $23,000 car?

Helena lost her marbles. but then she found them and put them in 44 bags with mm marbles in each bag. she had 33 marbles left over that didn't fit in the bags.