Which expression represents "5 times the sum of 4 and y? "
5 ⋅ 4 + y
5(4 + y)
4 + 5 ⋅ y
4(5 + y)

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.

Which of the following best describes the figure?

In the diagram, gef and hef are congruent. what is the value of x