Question

Consider a pattern that begins with 9 and each consecutive number is twice the previous term. What are the first four terms of this pattern? A. 9, 11, 13, 15 B. 9, 18, 27, 36 C. 9, 27, 81,243 D. 9, 18, 36, 72

Answer 1

"Twice the previous term" means the previous term is multiplied by 2 to get the present term. In other words, the next term is 2 times the present term.

The first term is 9 (given).

The second term is 2×9 = 18.

The third term is 2×18 = 36.

You can figure the 4th term, but there is no need. This is sufficient to identify the correct answer as ...

... D. 9, 18, 36, 72