Question 150160: Could I please get some help with the following problem:
Find the sum:
9
∑ (-2k+8)
k=1
Thanks,
Ray
Answer by Fombitz(32388)   (Show Source):
You can put this solution on YOUR website! Set up a table of values for k and the argument, (-2k+8).
EXCEL is a great program to do this.
k=1, -2k+8=-2(1)+8=6
k=2, -2k+8=-2(2)+8=4
k=3, -2k+8=-2(3)+8=2
k=4, -2k+8=-2(4)+8=0
k=5, -2k+8=-2(5)+8=-2
k=6, -2k+8=-2(6)+8=-4
k=7, -2k+8=-2(7)+8=-6
k=8, -2k+8=-2(8)+8=-8
k=9, -2k+8=-2(9)+8=-10
Sum the first nine terms,
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