Question

In the sequence of numbers a2 = 1, a3 = 5, a4 = 13, a5 = 13, a6 = 17, which equation can be used to find the nth term in the sequence, an?

A. an = 2n - 1
B. an = 3n - 2
C. an = n2 + 1
D. an = 2n2 - 1

Answer 1

The equation that can be used to find the nth term in the sequence is A. an = 2n - 1.

Step-by-step explanation:

The equation that can be used to find the nth term in the sequence is A. an = 2n - 1.

To see why this equation works, let's look at the sequence of numbers:

a2 = 1

a3 = 5

a4 = 13

a5 = 13

a6 = 17

By looking at the pattern, we can see that the sequence is increasing by 4 each time. This can be represented by the equation 2n - 1, where n is the term number.