Encontrar el largo y el ancho de un rectángulo que tiene el área dada y un perímetro mínimo. Área: A centímetros cuadrados

Hi my sisters and brothers can tell me the answer because i don’t understand the question

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.

Manuela solved the equation below. what is the solution to manuela’s equation?