Which answer represents the series in sigma notation? −3+(−1)+1+3+5 A:∑j=15(2j−5)
B:∑j=15(3j−6)
C:∑j=155j−1
D:∑j=15−3(13)j−1

A:∑j=15(2j−5)

Step-by-step explanation:

a = -3

d = -1 - (-3) = -1 + 3 = 2

j-th term: a + (j-1)d

-3 + (j - 1)(2)

-3 + 2j - 2

2j - 5

answer: y = -12x + 108

step-by-step explanation: do (y = m x+b) formula.

-12 > a

step-by-step explanation:

-11 > 1 + a

subtract 1 from each side

-11-1 > 1-1+a

-12 > a