PIGN ANIM
La muzeu sunt oferte de DVD-uri pentru copii: experimente si texte stiintifice. Un pachet format
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din 4 DVD-uri cu experimente si 5 DVD-uri cu texte stiintifice costs 187 lei, iar unul format din
4 DVD-uri cu experimente si 7 DVD-uri cu texte stiintifice costă 217 lei.
Cât costă un DVD din fiecare fel?​

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.