"The equation used to predict how long a cold will last is = -1.8 + 0.09x₁+ 3.2x₂- 1.9x₃, where x₁ is person's temperature on the first day, x₂is number of people seen each day, and x₃ is the amount of sleep the person gets. Use this equation to predict how long a cold will last with a temperature of 101.4 degrees, an average of 3 people seen each day, and 7 hours of sleep."