Tina bakes cookies once a week on Sunday evening, and sells them at her bakery. Tina estimates that the bakery sells 16 cookdes per day. Because her bakery is a small business, she cannot afford to tum any customers away. Each cookie costs $0.50 in ingredients. Whenever she bakes a batch of cookies, it costs a fixed fee of $25 in labor. Lastly, it costs $0.10 to store a single cookie at the bakery for a week. The bakery operates 7 days a week. You can assume 365 days in a year and 52 weeks in a year. a) (6 points) What are Tina's costs each week under her current baking strategy? b) (3 points) On average, how many days does a cookie sit at the bakery until it gets sold? + O B