10. Write a formula for the sequence: 10, 17, 24, 31,...(Points : 1)
3 + 7n
10 + 7n
31 - 7n

11. Write a formula for this sequence: 8, -1, -10, -19,...(Points : 1)
8 - 9n
17 - 9n
-19 - 9n

Question

10. Write a formula for the sequence: 10, 17, 24, 31,...(Points : 1)  
       3 + 7n
       10 + 7n
       31 - 7n
  
    
11. Write a formula for this sequence: 8, -1, -10, -19,...(Points : 1)  
       8 - 9n
       17 - 9n
       -19 - 9n

anonymous · Answer

10.   10+7n
11.   8-9n

blurbendy · Answer

See what happens if you put (1) into n for each of these sequences.  Then put (2) into n.  When the pattern emerges, you know which formula is correct!