Final answer:
The given information does not provide enough data to determine Aaron's acceleration as he drives down Shaver St.
Step-by-step explanation:
The question does not provide enough information to calculate Aaron's acceleration as he drives down Shaver St. The given information only provides the values of acceleration at two different times, 15 seconds and 30 seconds, but it does not specify Aaron's acceleration at any other time interval. Without this information, we cannot determine Aaron's acceleration. Therefore, the correct answer is that the acceleration cannot be determined based on the given information.