Based on the provided table for tickets sold and money earned, here are the appropriate responses for each query:
a. Every ticket sold is Response area: 12 dollars earned.
(You can determine this by dividing the money earned by tickets sold for any pair, e.g., 48 dollars for 4 tickets gives 48/4 = 12 dollars per ticket.)
b. Dollars/1 ticket is called a Response area: unit rate.
(This refers to the cost of one ticket in terms of dollars.)
c. This relationship is Response area: proportional, because 0 tickets sold is Response area: 0 dollars earned.
(The relationship is proportional since the earnings are consistently based on the number of tickets sold, and when no tickets are sold, no money is earned.)
So, the final answers are:
a. 12
b. unit rate
c. proportional and 0