Question

Given the first five terms of the sequence 81, 27, 9, 3, 1... use the subscript notation to describe a7
,(1 point)
Responses

a7=1/9
A sub 7 is equal to 1 ninth

a7=27
A sub 7 is equal to 27

a7=1/27
A sub 7 is equal to 1 over 27

a7=3
A sub 7 is equal to 3

Answer 1

a_7 = 1/9

Each term is multiplied by 1/3. After 1, the next terms are 1/3 (a_6) and 1/9 (a_7).