Alivestock pen is built in the shape of a rectangle that is 2 times as long as it is wide. the perimeter is 42 feet. if the material used to build the pen is $ 1.25 per foot for the longer sides and $ 2.50 per foot for the shorter sides (the shorter sides have gates, which increase the cost per foot), find the cost to build the pen.

In the diagram of circle a what is m

Ab and bc form a right angle at point b. if a= (-3,-1) and b= (4,4) what is the equation of bc?

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.