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anonymous
 one year ago
Find an explicit rule for the nth term of a geometric sequence where the second and fifth terms are 12 and 768, respectively.
an = 3 • (4)n + 1
an = 3 • 4n  1
an = 3 • (4)n  1
an = 3 • 4n
anonymous
 one year ago
Find an explicit rule for the nth term of a geometric sequence where the second and fifth terms are 12 and 768, respectively. an = 3 • (4)n + 1 an = 3 • 4n  1 an = 3 • (4)n  1 an = 3 • 4n

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0As we know Un=Up.r^np right?

misssunshinexxoxo
 one year ago
Best ResponseYou've already chosen the best response.1Which do you believe it is?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0honestly i have no clue how to do this

misssunshinexxoxo
 one year ago
Best ResponseYou've already chosen the best response.1T(n)=T(1)r^(n1) => T(1)r=36(1) T(1)r^4=2304(2) (2)/(1)=> r^3=2304/36=> r=4 From (1), get T(1)*4=36=> T(1)=9 => the general term T(n)=9*4^(n1)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Hey are you sure you have written the choices correctly ?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0can i just plug them in and see which one gives me the 2nd as 12 and the 5th as 768

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Well yea thats the only way to solve but none works

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@misssunshinexxoxo which choice would it be?

misssunshinexxoxo
 one year ago
Best ResponseYou've already chosen the best response.1My best answer would be an = 3 • (4)n  1 should be good for this
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