Which answer represents the series in sigma notation?

1+13+19+127+181+1243+1729

a. ∑j=1713j+1

b. ∑j=173j−1

c. ∑j=1713(j+1)

d. ∑j=17(13)j−1

D is your answer :)

Step-by-step explanation:

arithmetic sequence

step-by-step explanation:

given that a sequence has terms as

19, 15, 11,

this is represented on a graph

the pattern indicates that the sequence is an arithmetic sequence with i term

a=19 and common difference d =-4

any general term

thus the sequence is reduced by 4 for each successive term starting from 1 and nth term is

24-5n.

first negative term would start after 5th term

5th term =24-25< 0

from 5th term onwards the sequence would be negative.

horizontal translation of 2 units in the positive x direction

followed by

vertical translation of 3 units in the positive y direction