Question

MATH URGENT HELP!!!

Look at the sequence in this table. Which function represents the sequence


Choices are in the screenshots

Answer 1

According to table :
`a_1= -1.`

`a_2= 1`

`a_3= 3`

`a_4=5`.

Now, we can find common difference, : second term - first term = 1-(-1) = 1+1=2.

We know formula for a recursive sequance of an arithmetic sequence is

`a_n=a_(n-1)+d`, where n is the number of term and d is the common difference.

If we plug d=2 in that formula, we would get

`a_n=a_(n-1)+2.`

Therefore, correct option is second
`a_n=a_(n-1)+2` option.