PLZ HELP I can use the arithmetic sequence formula to find the nth term.

I can write an arithmetic sequence equation to represent an arithmetic sequence.

I can graph an arithmetic sequence function.

An arithmetic sequence is a sequence of numbers in which the difference between each term is constant.

There is a formula we can use to work with arithmetic sequences (explicit):

Sequence:

Is this an arithmetic sequence? Why or why not? (2 points)

_

If so, use the Explicit Formula above to create an equation to find the nth term. (13 points)

Find the 18th term. (5 points)