Question

(93) points!!! Help please?!!

Answer 1

Answer:

27 times 9 ^n-3

Step-by-step explanation:

Answer 2

Answer:

Replace n with 3:

$a_{n} = 3 * 2^{n-1} \\a_{3} = 3 * 2^{3-1} \\a_{3} = 3 * 2^{2} \\a_{3} = 3 * 4\\a_{3} = 12$