Answer:
D.
Step-by-step explanation:
The domain is the interval of x numbers. In this case the x values go from 0 to 10.
We know 10 is the maximum because they have said so as there are only 10 tickets available at a time. Also the graph agrees with that.
So the answers cannot be A or C since there is a limit to the domain.
B cannot be the answer since there cannot be fractional tickets (1 1/2, 5 1/8 etc.). The tickets are countable and they should be whole numbers. Real numbers include fractions, decimals too.
Therefore, the answer is D.
Hope this helps! :)
