Which problem is best represented by the expression ? How many portions that are 16 of a whole pizza can be made with 23 of a pizza?

Ryan's mom gave Ryan 23 of a pizza to eat. Ryan eats a portion that is 16 of the whole pizza. How much pizza is left?

Leena has 23 of a glass of milk with her. She gives 16 of it to her cat. How much of milk is left with her now?

Leena has 23 of a glass of apple juice with her. She adds another 16 glass of apple juice to it. How much apple juice does she now have?

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.