Sofia bought 12 pens for $0.59 each. she paid with a $10 bill. how much change will she receive?

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.

Math it's appreciated. (picture provided)

The surface area of the triangular prism is .