To determine the rate of change in the squirrel's height above the ground as it descends from its perch to its stored acorns, we can use the formula for rate of change, which is the change in height divided by the change in time.
- Initial height (perch): 100 ft
- Final height (acorns): 45 ft
- Change in height: Final height - Initial height = 45 ft - 100 ft = -55 ft
- Change in time: 5.25 seconds
Now, we can calculate the rate of change:
\[ \text{Rate of change} = \frac{\text{Change in height}}{\text{Change in time}} = \frac{-55 \text{ ft}}{5.25 \text{ s}} \approx -10.48 \text{ ft/s} \]
Now, interpreting the options:
- A) The rate of change in the squirrel's height above the ground is -10.48: This is correct, as it matches our calculation.
- B) The rate of change is -19.05: This is incorrect.
- C) The rate of change is 19.05: This is incorrect because the rate is negative.
- D) The rate of change is 10.48: This is also incorrect for the same reason.
Thus, the correct answer is A: The rate of change in the squirrel's height above the ground is -10.48 ft/s.