To find the rate of change in the plane's altitude, we can use the formula for rate, which is:
\[ \text{Rate} = \frac{\text{Change in Altitude}}{\text{Time Taken}} \]
In this case, the plane is descending 4,000 feet and it takes 3.5 minutes to do so.
Substituting the values into the formula:
\[ \text{Rate} = \frac{-4000 \text{ feet}}{3.5 \text{ minutes}} \]
Now we divide:
\[ \text{Rate} = -1142.8571428571429 \text{ feet/minute} \]
Rounding to the nearest hundredth, we get:
\[ \text{Rate} \approx -1142.86 \text{ feet/minute} \]
The negative sign indicates that the plane is descending. Therefore, the final answer is:
The quotient that best represents the rate of change in the plane's altitude is approximately -1142.86 feet/minute.