SOLUTION: Find the number of terms in this sequence: 72, 56, 40, 24, ..., -440 Type in the number only: There are _____ terms

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Question 634866: Find the number of terms in this sequence:
72, 56, 40, 24, ..., -440
Type in the number only: There are _____ terms
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

Find the number of terms in this sequence: 

72, 56, 40, 24, ..., -440    Arithmetic dequence, d = -16

a%5Bn%5D+=+72+%2B+%28n-1%29%28-16%29+=+-440

                 (n-1) = -512/-16  = 32

                    n = 33