A bicyclist rides for 4 h at a speed of 12 mph and then returns at a speed of 16 mph. Find the cyclist's average speed for the trip. (Enter your answer as a fraction.)

You work in a hospital that has 9 floors. you need to see 3 patients on each floor. how many patients do you need to see in all?

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.

Plzz ! need the answer asap! 7% of 980