A pipe is draining water from a tank. The table below shows the time in minutes and the number of gallons remaining in the tank. 5 mins drained 300 gallons, 10 mins drained 260 gallons, 15 mins drained 220 gallons, 20 mins drained 180 gallons, and 25 mins drained 140 gallons. Based off the pattern/rate, how much water would be drained in a half an hour?

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.