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Please help. Write a rule for the nth term of the sequence. Use your rule to find a100.–8, 9, 26, 43, 60, . . .
 one year ago
 one year ago
Please help. Write a rule for the nth term of the sequence. Use your rule to find a100.–8, 9, 26, 43, 60, . . .
 one year ago
 one year ago

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BluFootBest ResponseYou've already chosen the best response.0
Your sentence seems scrambled... "Use your rule to find a100.–8" What's going on there?
 one year ago

Rachel98Best ResponseYou've already chosen the best response.0
Use your rule to find a100. The sequence is –8, 9, 26, 43, 60, . . .
 one year ago

BluFootBest ResponseYou've already chosen the best response.0
OK look at the difference between the consecutive numbers in the sequence. How much between 8 and 9? How much between 9 and 26? Do you see a pattern?
 one year ago

Rachel98Best ResponseYou've already chosen the best response.0
Yeah, I see an increase of 17
 one year ago

BluFootBest ResponseYou've already chosen the best response.0
Good. So your rule "a" will look like: a = 17n + b where n is the "nth" term in the sequence b is some number. To solve for b, take the first number in the sequence (n=1, 1st number). When n=1, a=8. So: a = 17n + b 8 = 17*1 + b Can you solve for b?
 one year ago

Rachel98Best ResponseYou've already chosen the best response.0
Umm... I'm not really sure.  8 = 17*1 + b =  8 = 17 + b. subtract 17 from both sides?  25 = b?
 one year ago
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