While taking inventory at his pastry shop, Colton realizes that he had 9 7/12 boxes of baking powder yesterday, but the supply is now down to 2 11/12 boxes. How much more baking powder did Colton have yesterday? i know this is easy im just lazy

Me its important ! marge runs an ice cream parlor. her speciality is triple chocolate sundaes.she can prepare 1 sundae every 2 minutes, and she earns $1.20 for each sundae she makes . if she just makes sundaes for a single shift of at most 4 hours and at least 2 hours , which function relates her earnings to the number of minutes she works?