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anonymous
 one year ago
Write an expression for the general or nth term, an, for the geometric sequence. 1, 4, 16, 64...
A. An=1.(4)^n1
B. An=1.(4)^n
C. An=1.4^n1
D. An=1.4^n
anonymous
 one year ago
Write an expression for the general or nth term, an, for the geometric sequence. 1, 4, 16, 64... A. An=1.(4)^n1 B. An=1.(4)^n C. An=1.4^n1 D. An=1.4^n

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freckles
 one year ago
Best ResponseYou've already chosen the best response.1so have you notice the common ratio for example what are the following equal to: \[\frac{4}{1}=? \\ \frac{16}{4}=? \\ \frac{64}{16}=?\] notice I just did term/previous term

freckles
 one year ago
Best ResponseYou've already chosen the best response.1you should find that those all equal to 4 which they should have term/previous term hold a constant number since they claimed it was a geometric sequence but anyways since the common ratio is 4 you can definitely rule out C and D and only look at A and B

freckles
 one year ago
Best ResponseYou've already chosen the best response.1Now the only way I can answer if it is A or B is if you tell me if your class uses n=0 for the first term or you use n=1 for the first term

freckles
 one year ago
Best ResponseYou've already chosen the best response.1but if you know this will really be needed because both of those could described the sequence depending on how n is defined

freckles
 one year ago
Best ResponseYou've already chosen the best response.1anyways if it is n=1 which of the following gives 1 as the answer: \[A_1=1(4)^{11} \text{ using choice A here } \\ A_1=1(4)^{1} \text{ using choice B here }\]

freckles
 one year ago
Best ResponseYou've already chosen the best response.1we are looking to see which gives A_1 as 1 since 1 is the first number in the sequence

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Okay, thanks. I think it's A.

freckles
 one year ago
Best ResponseYou've already chosen the best response.1yes that is only if your class uses n=1 to give first term
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