sequence formula

Question

Fill in the table. Drag and drop the correct formula based on the sequence.

||sequence|Recursive Formula|Explicit Formula|

Let a1=2

2,14,98,686, ....

answers an=an-1+2 an=an-1+7 an=2(an-1) an=7(an-1) an=7+2(n-1) an-2x7n-1 an=7x2n-1

Answer 1

Each number in the sequence is 7 times the previous value, so a(n) = 7*a(n-1) would be the recursive formula.

An explicit formula would a(n) = a(1)*7^(n-1).