Asked by Kaycee
                For the series 16, 24, 36, 54,... find S7.
A) 32.17
B) 115.75
C) 514.75
D) 3906.25
B?
            
        A) 32.17
B) 115.75
C) 514.75
D) 3906.25
B?
Answers
                    Answered by
            Reiny
            
    looks like a GP with a = 16, and r = 3/2
sum(7) = a( r^7 - 1)/(r-1)
= 16(2187/128) - 1)/(1/2)
= 32(2059/128)
= 2059/4 or 514.75
how can the answer be 115.75 when the first 4 terms shown already add up to 130 ?
Are you just guessing ?
    
sum(7) = a( r^7 - 1)/(r-1)
= 16(2187/128) - 1)/(1/2)
= 32(2059/128)
= 2059/4 or 514.75
how can the answer be 115.75 when the first 4 terms shown already add up to 130 ?
Are you just guessing ?
                                                    There are no AI answers yet. The ability to request AI answers is coming soon!
                                            
                Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.