Please give me the answer please

How do i make someone brainliest? (if you answer me, i might be able to make you brainliest! )

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 center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?