The formula C = 20x + 5 models the cost of New York Yankees T-shirts, where C is the cost and x is the number of shirts sold. Choose ALL TRUE statements in the context of this situation.

The total cost of T-shirts sold represents the domain

This model is a relation but not a function

The total cost of T-shirts sold represents the range

The cost of 20 T-shirts is $405.00 This model is a function