Final answer:
The first four terms of the sequence and their properties such as sum, average, and rate of change cannot be determined without additional information about the calculations being done on the calculator.
Step-by-step explanation:
The first four terms of a sequence generated by a calculator can vary depending on the specific calculations being done. Without more information, it is not possible to provide the exact values of the first four terms.
To find the sum of a sequence, you add all the terms together. The average of a sequence is found by dividing the sum by the number of terms. The rate of change in a sequence is the difference between consecutive terms.
In order to provide more specific answers, the specific calculations being done on the calculator would need to be known.