Diego says that 108 cubes with an edge length of 1/3 inch are needed to fill a rectangular prism that is 3 inches by 1 inch by 1 1/3 inch. Explain or show how this is true.

The solution to the problem is as follows:

Let m be the rate Crystal earns per hour on mowing the lawns.

m = 5.5h 

Since:

rate = quantity / time

quantity (earnings) = 5.5 *3.75 = $20 and 62.5 cents 

Therefore, she earns $20 and 62.5 cents in 3 hours and 45 minutes.

I hope my answer has come to your help. God bless and have a nice day ahead!