John bought 6 dumplings for $3.00. let x represent the number of dumplings purchased, and let y represent the total cost. graph the line that represents the proportional relationship.

Sanya noticed that the temperature was falling at a steady rate of 1.4 degrees every hour from the time that she first checked her outdoor thermometer. by 6 a.m., the temperature had fallen 21 degrees. which expression can you use to find how many hours earlier she had first checked the thermometer?