Question

Consider the infinite geometric series.
a. Write the first four terms of the series.

Answer 1

to get the first term, plug in n = 1 and evaluate

to get the second term, plug in n = 2, evaluate, and add that to the first term you found above

to get the third term, plug in n = 3, evaluate, and add that to the first two terms

etc etc

Answer 2

where do I plug it in at?