8) Ms. DeCherico has two rectangular structures in her backyard. The dimensions of the pool are 5 feet by 6 feet. The dimensions of the fire pit are 7 feet by 8 fect. The length of the square backyard is 15
feet. What area of the yard is not covered by the pool and the fire pit?
a) 139 ft.
b) 146 ft.
c) 124 ft.
d) 156 ft.

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.