To use energy efficiently, a certain washing machine should wash at least 2 kilograms of clothes. To avoid overloading the machine, at most 6 kilograms should be washed. What is the range of the loads for this washing machine ?

Sophia wrote an equation to represent the revenue of a movie theater for one day. she let x represent the number of child tickets sold and y represents the nunver of adult tickets sold. if a child ticket cost $4, an adult ticket cost $6, and the total revenue for the daybwas $420, which equation could sophia use to represent the number of chikd and adult tickets that were sold?