Can someone please help thank u

Ineed with 14, 16, 28 and 36 me. we didn't go over them in class so i don't know what to do.

Mason and christian go to the movie theater and purchase refreshments for their friends. mason spends a total of $45.75 on 3 bags of popcorn and 6 drinks. christian spends a total of $71.50 on 6 bags of popcorn and 4 drinks. write a system of equations that can be used to find the price of one bag of popcorn and the price of one drink. using these equations, determine and state the price of a drink, to the nearest cent.

Given the equation negative 4 square root x minus 3 equals 12