What is the constant in the expression 8x-2y+48

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.

How many solutions does the nonlinear system of equations graphed bellow have?

Ineed here’s a picture of the question