Which of the following best describes the expression 7(y + 5)? а
The sum of two constant factors seven and five plus a variable
b
The product of two constant factors seven and five plus a variable
Oc
The sum of a constant factor of five and a factor with the product of two terms
Od
The product of a constant factor of seven and a factor with the sum of two terms

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.