30 minute timer Please help

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.

What is the y-intercept of the line given by the equation

Select the point that is a solution to the system of inequalities. y< =-x+3 y=x^(2)-3x