Which of the following is the most appropriate unit to describe the rate at which a person reads?
a. words per minute, because the independent quantity is the words.
b. words per minute, because the independent quantity is the minutes.

we'll this would mean that the dunk tank and the bounce house are the same for 20 hours because the 2 represents that the two activities, and the 20 represents the amount of hours they both are. so with this said, it means that the answer is c. the costs for a dunk tank and bounce house are the same for 20 hours.

c.the costs for a dunk tank and bounce house are the same for 20 hours.

hope this .