Question 13 (Essay Worth 8 points) Write the sum using summation notation, assuming the suggested pattern continues.

3, -12, 48, -192, + …

Is this sequence arithmetic or geometric? Explain your answer.

9514 1404 393

  geometric sequence

Step-by-step explanation:

The terms of the sequence have a common ratio of -12/3 = -4, so the sequence is geometric. The general term is ...

  an = 3(-4)^(n-1)

so the sum can be written as ...

(Note the summation starts at n=0, corresponding to a first term of 3.)

step-by-step explanation:

through just a quick inspection, one can see that the graph of this cubing function starts in quadrant iii and ends in quadrant i.   when x = 0, y = 3, so the y-intercept is (0, 3).

if graphs are part of the problem statement, share them.   .

whats the question?

step-by-step explanation: