A kennel charges $15 per day board dogs. Upon arrival, each dog must have a flea bath that costs $12. Part A: Write a function rule for the total cost for n days of boarding plus a bath.

Part B: How much does a 10-day stay cost?

Part C: Does a 5-day stay cost half as much as a 10-day stay? Explain.

What I Think:

I think the function rule is C=15+12n.

10-day stay cost: 135

5-day stay: 75. No, a 5-day stay does not cost half as much as the 10-day stay.

Is this correct???