Question

Which explains why the sequence 81, 3, , 1/9… is arithmetic or geometric?

• The sequence is arithmetic because it decreases by a factor of .
• The sequence is geometric because it decreases by a factor of .
• The sequence is arithmetic because it decreases by a factor of 3.
• The sequence is geometric because it decreases by a factor of 3.

My answer is C check my work

Answer 1

divide the second term by the first and the third by the second

Answer 2

3/81 = ?

3 / 1/9 = ?

Answer 3

sorry thats 1/9 / 3

Answer 4

its geometric because the next term is found by 3/81 = 1/27

Answer 5

so D