Need - will mark brainliest
show all work.
1. the volume of a fish tank is 300ft^3. if the density is 0.3 fish/feet, how many fish are in the tank?
2. what is the shape of the cross section taken parallel to the base of a square pyramid?
3. find the volume of the cube which is 5 centimeters long, 5 centimeters wide, and 5 centimeters tall.

(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.