Which type of sequence is represented by the given table?
x
1
2
3
4
y
4
-9.6
23.04
-55.296

a.
the table represents a geometric sequence because the successive y-values have a common ratio of -2.4.
b.
the table represents an arithmetic sequence because the successive y-values have a common difference of -17.
c.
the table represents a geometric sequence because the successive y-values have a common ratio of 0.4.
d.
the table represents an arithmetic sequence because the successive y-values have a common difference of 4.2.

A.  

The table represents a geometric sequence because the successive y-values have a common ratio of -2.4.

Step-by-step explanation:

A geometric sequence, with a first term a and common ratio r, is generally represented as;

The first term refers to the first number that appears in the sequence. The common ratio is the constant that multiplies a preceding value to obtain the successive one. That is, to obtain from we multiply by the common ratio r.

In the table given the y-values are as follows;

4, -9.6, 23.04, -55.296

To obtain the common ratio we simply divide each value by the preceding one;

(-9.6)/4 = -2.4

23.04/(-9.6) = -2.4

(-55.296)/23.04 = -2.4

Since the sequence of numbers has a common ratio then it qualifies to be a geometric sequence. Thus, the table represents a geometric sequence because the successive y-values have a common ratio of -2.4.

answer: haha (: i’ll go see what it is

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