Final answer:
Appropriate input values for the function representing the total cost of the flower-delivery service are any non-negative integers, representing the number of flower arrangements ordered.
Step-by-step explanation:
The student has asked about appropriate input values for a flower-delivery service cost function. The function provided by the student seems to have a typo, but based on the context given, an accurate function that represents the total cost y would be y = 39.95x + 2.99, where x is the number of flower arrangements ordered. As this is a real-world scenario, only whole numbers (integers) that are zero or positive would make sense as inputs. Fractions of a flower arrangement cannot be ordered, and negative numbers of arrangements are not possible.
Therefore, appropriate input values for the number of flower arrangements (x) would be any non-negative integer: 0, 1, 2, 3, ... and so on.