This is 52 degrees Celsius. At time 9, or after 9 minutes, I should say, it's at 44 degrees Celsius. So this is 44 degrees Celsius, and after 10 minutes, it's at 43 degrees Celsius. So this is really just a graph showing how it cools off over those 10 minutes. That's what the data is telling us. It's kind of a curve like this, and we've sampled it at these points. So going back to part A, use the data in the table to approximate the rate at which the temperature of the T is changing at time T equals 3.5.