what is the recursive rule for the sequence -7.4, -21.2, -35, -48.8, -62.6

an=an-1+13.8
an=an+1+13.8
an=an+1-13.8 <-- or D
an=an-1-13.8 <-- or C

each term is calculated using the previous term, not the next one!

oohh!! Thanks Steve.

- 21.2 - ( - 7.4 ) = - 21.2 + 7.4 = - 13.8

- 35 - ( - 21.2 ) = - 35 + 21.2 = - 13.8

- 48.8 - ( - 35 ) = - 48.8 + 35 = - 13.8

- 62.6 - ( - 48.8 ) = - 62.6 + 48 = - 13.8

an = a(n-1)- 13.8

Thanks!

To find the recursive rule for the given sequence -7.4, -21.2, -35, -48.8, -62.6, we need to determine the pattern between each term.

In this sequence, each term is obtained by subtracting 13.8 from the previous term.

So, the correct recursive rule for this sequence is: an = an-1 - 13.8 (Option D)