A girl can run a mile in 13 minutes. Write an expression for the number of miles she can run in minutes.
The area of the floor of a silo is ft2. The height of the silo is ft. Write an expression for the volume of grain that the silo can hold by expanding the square and multiplying by the height.
The diagram below shows the operation of a number machine.
Which of the following expressions describes , the output of the number machine?