Solve the system of equations.
6x - 5y = 15
x = y + 3
x =
1

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 each quadratic equation by factoring and using the zero product property. [tex]x^2+6x+8=0[/tex]

Tom drove 206 miles in 3.9 hours. estimate his average speed.