Aysah wants to vend tea at the Wednesday Wellness Fair. She buys a pitcher and sachet tea bags from a store for this purpose. While vending, the cost for each cup of will be the same. If Aysah sells 48 cups of tea, she will have a profit of $144. If she sells 20 cups of tea, she will have a profit of $60.

Determine the rate of change for a function that represents Aysah's profit, y, in dollars, from selling x cups of tea.

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.