Write an equation to the nth term of the arithmetic sequence. (write the equation for the sequence)

15, 13, 11, 9

15,13,11,9, ...

Given

2

13 - 15 = - 2

11 - 13 = - 2

9 - 11 = - 2

d = - 2

3

4

when n = 515,13,11,9, ...

Given

2

13 - 15 = - 2

11 - 13 = - 2

9 - 11 = - 2

d = - 2

3

4

when n = 515,13,11,9, ...

Given

2

13 - 15 = - 2

11 - 13 = - 2

9 - 11 = - 2

d = - 2

3

4

when n = 5