1. What is an Arithmetic Sequence? Give a good example.
2. Define the general term in arithmetic Sequence and refer its Key ingredients.
3. Write a formula for the general term (the nth term) of the arithmetic sequence whose second term, a2, is 4 and whose sixth term, a6, is 16.
4. Write a formula for the general term (the nth term) of the arithmetic sequence whose third term, a3, is 7 and whose eighth term, a8, is 17.
(What formula do we use to solve the above two problems)