The rectangular prism shown below is made of cubes which measure of an inch on one side. what is the volume?
a. 6 cubic in
b. 60 cubic in
c. 30 cubic in
d. 5 cubic in

When rates are expressed as a quantity of 1, such as 2 feet per second or 5 miles per hour, they are called unit rates. if you have a multiple-unit rate such as 120 students for every 3 buses, and want to find the single-unit rate, write a ratio equal to the multiple-unit rate with 1 as the second term.