At the movie theater leon can buy 4 large popcorns or 2 large popcorns and 3 candy bars for the same price. if the candy bars cost $6 each, how much is one large popcorn?

How many different ways can you make change for $.50 using only nickels,dimes, and quarters?

Which expression is equivalent to 2x^2+7x+4?

10 ! a train starts from grand city and travels toward belleville 388 miles away. at the same time, a train starts from belleville and runs at the rate of 47 miles per hour toward grand city. they pass each other 4 hours later. find the rate of the train from grand city.