Im doing a test review and i have no idea how to do this

For what value of x does 4x = (1/8) x + 5?

Asphere has a diameter of 10 in. what is the volume of the sphere?

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.