Consider the sequence 2, 6, 18, 54, . . .
Let "n" = the term number in the sequence.
Let A(n) = the value of the "n"th term of the sequence.

Complete each statement:

a. A(1) = 2 = 2 * 3^?

Question

Consider the sequence 2, 6, 18, 54, . . . 
Let "n" = the term number in the sequence. 
Let A(n) = the value of the "n"th term of the sequence.

Complete each statement:

a. A(1) = 2 = 2 * 3^?

anonymous · Answer

attachment

campbell_st · Answer

the general equation is A(n) = 2*3^(n -1)   n >=0

anonymous · Answer

The formula is Un=U1(r)^n-1
The part you're looking for is the n-1
as n is 1, the equation must be raised to 0.

campbell_st · Answer

so A(1) = 2*3^1   A(2) = 2*3^1 etc A(3) = 2*3^2