Biologists estimate deer populations by sampling a small area and using that information to estimate the entire population of a large area. They use the equation p= na to estimate p, the population of deer in a acres of land, where
n is the number of deer per acre determined from the sampling. A biologist determines that 1,800 deer populate an area
of 150 acres. What value of n did the biologist find in the initial sampling of the population?
12
B 83
1,650
270,000

(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.