## iiamdance 2 years ago Write a recursive formula for the sequence 7, 4, 1, –2, –5, .... Then find the next term. (1 point) an = an–1 – 3, where a1 = –8; 7 an = an–1 – 3, where a1 = 7; –8 an = an–1 + 3, where a1 = –3; 22 an = an–1 + 3, where a1 = 7; –8

1. amistre64

whats the first term of the sequence?

2. iiamdance

@amistre64 7

3. amistre64

then that narrows it down to two options right? what more can we gather from it?

4. amistre64

are the terms in the sequence getting bigger or smaller?

5. iiamdance

Smaller

6. amistre64

then that should help us pinpoint a solution: we need it to start at 7 and have a next value smaller than -5

7. amistre64

lol, you edited that -3 to a -8 didnt you

8. iiamdance

huh ?

9. amistre64

im sure option B gave us 7;-3 when i first read it. but in any case we are still starting at 7, and getting progressively smaller each time ... meaning we are subtracting from the previous term

10. iiamdance

so 7 - 4 , 4 - 1 , etc ?

11. amistre64

lets start at 7 7 the next terms is 7 - 3 right? 4 the next term is 4 - 3 right? 1 the next term is 1 - 3 right? -2 etc ....

12. iiamdance

13. amistre64

these old eyes of mine can be tricky, but it does appear the B matches the setup correctly

14. iiamdance

Aw Its Ok ! :) Thank You For Walking Me Through It !

15. amistre64

good luck ;)