SOLUTION: For an arithmetic sequence a<sub>13</sub> = 241 and common difference = 7. Determine the explicit formula and the first five terms of the sequence

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Question 1103995: For an arithmetic sequence a13 = 241 and common difference = 7. Determine the explicit formula and the first five terms of the sequence
Answer by Edwin McCravy(20054)   (Show Source): You can put this solution on YOUR website!



Substitute n = 13, d = 7







Substitute a13 = 241



Subtract 84 from both sides



Back to



Substitute a1 = 157, d = 7







 <--explicit formula

To find first five terms, write first term 157, and
add 7 successively to it and each preceding term to get the
next term:

157, 164, 171, 178, 185  <--first five terms

Edwin
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