Aspherical balloon is being inflated and the radius of the balloon is increasing at a rate of 10 cm/s. (
a. express the radius r of the balloon as a function of the time t (in seconds).

How is working backward similar to solving an equation?

Find the distance from the theater to the library. leave your answer in simplest radical form if necessary. 12 √12 74 √74

(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.