Question

A vacation home in Orlando, Florida, rents for $105 per day. The function gives the cost of renting the home for x days. What is the domain of this function?

A.{0,1,2,3,...}
B. all real numbers
C.{0,105,210,315, ...}
D.x≥0

Answer 1

A.

Explanation:

The domain has to be a number of days, counted using whole numbers. It might be tempting to choose answer D, but that set includes numbers like 3.1416. Really? I want to rent a vacation home for 3.1416 days? :-)