Determine which of the following scenarios describe linear functions. Check all that apply.

A. In the year 1990, the median home price in the United States was $ 92,000. The median price increased by about $ 4700 per year over the next decade. Consider the relationship between the number of years since 1990, and the median home price in the United States.
B. Annalise is on vacation at a seaside resort. She can rent a bicycle from her hotel for $ 3 an hour, plus a $ 5 insurance fee. The relationship between the number of hours she rents the bicycle for and the amount of money she pays.
C. The relationship between the side of a square and it's area. (Hint: You may want to make a table with the areas of a few squares.)
D. The relationship between the distance from my house and the time for which I have been driving is explained in the following scenario: I drive 15 miles from my house in 20 minutes. Then I get on the highway and drive for another hour, and now I am 80 miles away from my house.