Question

how to make an equation to find the nth term

Answer 1

nth term of what?

Answer 2

The sequence is called an arithmetic sequence. It has a common difference, d, of 4, because 10-6 = 4 or 18-14 = 4

So the general term of the sequence is given by

a+(n-1)d

where a = first term
d = difference

In this problem, the general term is

6 + (n-1)4
or 6+ 4n-4
or 4n+ 2.

Answer 3

Do the same thiong I just did. The difference here is -1.
Use the formula I gave you.

Answer 4

Your welcome.