To find the rate of change in the plane’s altitude, we need to divide the change in altitude by the time taken to make that change.
The pilot descends 4,000 feet over a duration of 3.5 minutes.
We calculate the rate of descent as follows:
\[ \text{Rate of descent} = \frac{\text{Change in altitude}}{\text{Time}} = \frac{-4000 \text{ feet}}{3.5 \text{ minutes}} \]
Calculating the above expression:
\[ \text{Rate of descent} = \frac{-4000}{3.5} \approx -1142.8571 \text{ feet/minute} \]
Now we round this to the nearest hundredth:
\[ \text{Rate of descent} \approx -1142.86 \text{ feet/minute} \]
Thus, the quotient that best represents the rate of change in the plane’s altitude is
\[ -1142.86 \text{ feet/minute} \]
Since the plane is descending, the negative sign indicates a decrease in altitude.