Which formula can be used to describe the sequence? -3, 3/5, -3/25, 3/125, -3/625 A. f(x) = -3(1/5)^x-1 B. f(x) = -3(1/5)^x-1 C. f(x) = -1/5(3)^x-1 D. f(x) = -1/5(-3)^x-1

arponatsdWT

arponatsdWT

Answered question

2022-11-29

Which formula can be used to describe the sequence?
3 , 3 5 , 3 25 , 3 125 , 3 625 A . f ( x ) = 3 1 5 x 1 B . f ( x ) = 3 ( 1 5 ) x 1 C . f ( x ) = 1 5 ( 3 ) x 1 D . f ( x ) = 1 5 ( 3 ) x 1

Answer & Explanation

Kael Gill

Kael Gill

Beginner2022-11-30Added 8 answers

each term is multiplied by -1/5
first term is -3
a n = a 1 ( r ) ( n 1 )
for a1=first term
r=common ratio
n=which term
in this case
first term=-3
common ratio is -1/5so
f ( x ) = 3 ( 1 5 ) r 1
none of them
oh, A and B are the same
the one that has the -1/5 inside is the one

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