The Solution:
Given that the distance is defined by the function below:
We are required to find the average speed of the ladybug from t=1 second to t=3 seconds in inches/second.
Step 1:
For t=1 second, the distance in inches is
For t=3 seconds, the distance in inches is
By formula,
In this case,
Distance covered = change in distance, which is
Time taken = change in time, which is:
Substituting these values in the formula, we get
Therefore, the correct answer is 11 inches/second.