3. The segmented bar graph shows how many of the first 44 United States Presidents have died
while in office, classified by political party. What proportion of these Presidents have died
while in office?
Relative Frequency
Didat de
Republican
Democrat
Political Party
(A) 0.045
(B) 0.080
(C) 0.091
(D) 0.182
(E) 0.662

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.