Felix101
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Identify the type of sequence shown in the table below and select the appropriate response.

N: 1, 2, 3, 4, 5
F(n): 12, -36, 108, -324, 972

A) arithmetic sequence; common difference is -48

B) arithmetic sequence; common difference is 144

C) geometric sequence; common ratio is -3

D) geometric sequence; common ratio is 3

Respuesta :

pingwin09
The answer is C) geometric sequence; common ratio is -3.
TSO
972/ -324 = -3
-324/ 108 = -3
108/ -36 = -3
-36/ 12 = -3

Geometric series means multiplying a common ratio to the next number.

The answer is C) geometric sequence; common ratio is -3.

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