Use the given graph. Determine the period of the function. ( - Sort of Confused on the periods, would I find it using the bottom or top periods? Because it would be different answers whether is would be top or bottom. )
- - With It being Top Period it would be 1.5 - And with it being Bottom Period it would be 3.

Select one:
a. 6
b. 1.5
c. -0.9
d. 3

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.