The local grocery store sorted apples by size. The distribution is approximately normal. The large apples have a mean diameter of 10 cm with standard deviation equal to 0.5 cm. In a bin of 100 large apples , how many can be expected to have a diameter greater than 11.5 cm, three standard deviations above the mean? A. 10
B. 3
C. 30
D. 0
E. 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.