Muna must choose a size, a flavor of ice cream, and a topping for her ice cream dessert. There are two sizes to choose from: small and medium.
There are two flavors to choose from: strawberry and chocolate.
There are two toppings to choose from: nuts and cherries.
The tree diagram below shows the possible outcomes. Use the diagram to answer the questions.

(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.