Mega Movies hosted a film premiere on Friday night. They charged $9 for adults and $6 for children. One hundred thirty-nine adults and children attended, and $1,173 was made in ticket sales. How many children and how many adults went to the film premiere?
A.
20 children; 119 adults
B.
23 children; 116 adults
C.
30 children; 109 adults
D.
26 children; 113 adults

(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.