Question

Write an equation for the nth term of the following sequence. -1, -3, -9, .......

Answer 1

Answer:

nth term = -1(3)^(n-1)

Explanation:

The sequence of terms is

-1, -3, -9,...

So, the first term is -1

The second term is

-3 = -1(3)

The third term is

-9 = -1(3)²

Then, the nth term can be

$\text{ nth term }=-1(3)^{n-1}$

Therefore, the answer is

nth term = -1(3)^(n-1)