A powerlifter uses protein powder to make a smoothie each day after their workout. At the beginning of the week, the powerlifter starts with a 1,175 gram bag of protein. Each day, they use 47 grams of protein in their
smoothie.
1. Write an expression to represent the change in weight of the bag of protein over 1 week.
2. How long will it take the powerlifter to finish this bag of protein powder?

(50 ) mrs. julien’s and mrs. castillejo’s classes are selling cookie dough for a school fundraiser. customers can buy packages of macadamia nut chip cookie dough and packages of triple chocolate cookie dough. mrs. julien’s class sold 25 packages of macadamia nut chip cookie dough and 30 packages of triple chocolate cookie dough for a total of $221.25. mrs. castillejo’s class sold 5 packages of macadamia nut chip cookie dough and 45 packages of triple chocolate cookie dough for a total of $191.25. (a) write the system of equations that model the problem. be sure to explain which equation represents which situation. (b) find the cost of each type of cookie. show your work. (c) explain which method you used to solve the system and why you chose that method.