Help please is for a test

Write an equation in point-slope form for the line through the given point that has the given slope (-2,-7); m=-3/2

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.

When 142 is added to a number the result is 64 more then 3 times the number. option 35 37 39 41