Question

Is this sequence arithmetic, geometric, or neither?

3, 6, 9, 12, 15, ..

arithmetic
neither
geometric

Answer 1

The answer is arithmetic b because, the difference between the consecutive terms is constant

Answer 2

Arithmetic

Explanation:

nth = a + (n - 1)d

T4 = 3 + (4-1)3

= 3+ (3)3

=3 + 9

=12

Hence, the sequence is arithmetic