HELP PLEASE!! ILL GIVE YOU A BRAINLIEST IF YOURE RIGHT!!
What is the recursive formula for 1, 4, 13, 40, 121, …?
A.
a(n)=3a(n-1)+1
B.
a(n)=3a(n-1)-1
C.
a(n)=3x+1
D.
a(n)=a(n-1)+3

ANSWERS

2016-04-28 16:43:09

Answer: A. a(n)=3a(n-1)+1 This is because all the previous terms are being multiplied by three, then added by one in order to obtain the next terms.

2016-04-28 16:44:24

option "a" is correct because you are multiplying the previous term by 3 and adding 1

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