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How many terms of the arithmetic sequence 88, 85, 82, . . . appear before the number -17 appears?

 Apr 4, 2020
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L=-17; F =88; D =-3; N = (L - F) / D + 1
where L=Last term, F=First term, D=Common Difference, N=Number of terms
 N =36th term which is -17

 Apr 4, 2020

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