Simplify 5(x + 7) anybody

What term makes it inconsistent y=2x - 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.

Find the area of the triangle shown 3 by 6