Hakeem is making gelatin. He pours boiling water at 212° into the gelatin powder, mixes it, and puts it in the refrigerator. In the refrigerator, the gelatin cools at a constant rate of 4°F per minute. To set, the gelatin needs
to reach a temperature of 68°F. How long before the gelatin sets?
Write and solve an equation for the situation. Show or explain the reasoning you used to determine your
answer.