How do additional rates work?

Are these charges in addition to the baseline charges? I.e. if my boarding rate is 50, and my extended stay rate is 55 for more than 5 days, would I get 50/day, and then after 5 days it ups to 55/day? Or my daycare is 35 and the bathing and grooming rate is 25, I get 60?

Thank you in advance!