A movie theater sells tickets for the cost of x dollars. Which situation below can be represented by this inequality? 15x < 12x + 16

The cost of 15 tickets is greater than the cost of 12 tickets plus $16 for snacks.
The cost of 15 tickets is less than the cost of 12 tickets plus $16 for snacks.
The cost of 12 tickets with a coupon for $16 is less than 15 tickets.
The cost of 15 tickets is $16 greater than the cost of 12 tickets.

How do you solve a question like this?

John has 1/2 pound of oranges to share with julie. if they share the oranges equally, how much will each of them have?

(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.