sammy90210
Find an explicit rule for the nth term of the sequence.
5, 25, 125, 625, ...



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sammy90210
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an = 5 • 5n
an = 5 • 5n + 1
an = 5 • 5n
an = 5 • 5n  1

AravindG
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this is a geometric progression with a=5
r=5
cant u proceed from there?

sammy90210
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no, i have no idea how to do this type of problem :( @AravindG

AravindG
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nth term of gp=ar^n1
here 5(5)^(n1)

sammy90210
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so the last option?

sammy90210
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@AravindG

AravindG
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yep

sammy90210
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thank you :)

sammy90210
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what about
Find an explicit rule for the nth term of the sequence.
9, 36, 144, 576, ...
an = 9 • 4n  1
an = 4 • 9n  1
an = 9 • 4n
an = 9 • 4n + 1