Answer:
Step-by-step explanation:
A Geometric sequence can be used:
To Model this sequence you need to use this formula
<u>A (subscript n) = Ar(n-1)</u>
<u>a = value of the first term</u>
<u>n = the # of the term you want to find (For example, if you want to find the term number 3, it is 12) </u>
<u>r = the common ratio, this is obtained by dividing the second term in the sequence by the first.</u>
<u>So the value of r is = 2/3 because 27 times 2/3 = 18 which is the second term</u>
<u>n = 4 since you want to find the 4th term in the sequence</u>
Plug it in and the results are
4th term = 27(2/3)^(4-1) = 8
The answer is 8