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OpenStudy (anonymous):
The 18th term of a sequence is 243, and the 90th term is 516.6. What is the 125th term?
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OpenStudy (anonymous):
The multiple choice answers given are: A. 624.6 B. 649.6 C. 653.4 D. 4,928.4
OpenStudy (rock_mit182):
is a geometric sequence ?
OpenStudy (anonymous):
It doesnt say... :/
OpenStudy (kc_kennylau):
common difference = (516.6-243)/(90-18) = 3.8
OpenStudy (kc_kennylau):
125th term = 516.6 + 3.8 * (125-90) = 649.6
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OpenStudy (anonymous):
Thank you so much! I understand now
OpenStudy (kc_kennylau):
no problem :)
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