What is the value of 6/x + 2x2, when x = 3?

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.

Solve the following pair of equations for x and y: ax/b_ by /a= a +b; ax - by = 2ab

Benjamin is making bow ties. how many 1/2yards lomg bow ties can he make if he has 18 feet of fabric?