Could you also please clarify that for me. I don't understand it.

pencils 1. Determine if the given sequence is Arithmetic or a Geometric Sequence. (10 points) 9' 27 ' 81' a. Given Sequence is _Geometric b. Express the nth term of the sequence in the standard form. an = arn - 2 an = -3 ( 3 ) n - 1 isn = on ( as + an ) an = arn - s c. Find the 11th term, an1. Simplify completely and 11 - 1 express your answer as a fraction in the most simplified form. ! = = (/3) - 5. 6 4 5 02 9 27 E - 6 - 5. 65 all = 3 (3 ) D 10DDODD x ( - 1 ) - Ans = 3 . x (-1) = = 177147 d. Use your Calculator to find the partial sum to the first twenty first terms. Round your answer to 2 decimal places. Sn = a 1 - [ _ partial sum