The number of people, NNN, that Denis can invite to his party is dependent on the amount of money, xxx, in dollars, that he saved up for the party and can be modeled by the function N(x) = \dfrac{x}{25}N(x)= 25 x N, left parenthesis, x, right parenthesis, equals, start fraction, x, divided by, 25, end fraction. The amount of money that Denis saved for the party, MMM, in dollars, is dependent on the number of overtime hours, hhh, he worked this week and can be modeled by the function M(h)=50h+150M(h)=50h+150M, left parenthesis, h, right parenthesis, equals, 50, h, plus, 150. Find an explicit expression that models the number of people that Denis can invite to his party if he worked hhh overtime hours this week.

(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.