The graph shows the amount of money spent (y-axis) per person (x-axis) who enter a baseball park. What is a reasonable Domain of this function?

1. _____ Does it make sense to connect the dots?
2.______

1.
a. Domain is All Real numbers
b. Domain is all Integers
c. Domain is all Whole numbers
d. Domain consists of Irrational and Rational numbers

2.
a. It does not make sense since the must be a whole number
b. It does not make sense since money spent must be in whole dollars
c. It does make sense since connecting dots shows projection
d. It does make sense since there are more data points than what is graphed