19.698 feet of cable would be needed, this would round up to 20 feet total.
The answer is is clearly 69420
<span>x = 17/5 = 3.4
Hope this further assists you!
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ANSWER

EXPLANATION
The given sequence is
3,-5,-13,.....-229.
The first term of this sequence is
a_1=3
There is a common difference of

The last term of this sequence is -229.
The nth term of this sequence is given by:

We use the last term to determine the number of terms in the sequence.



Divide through by -8;


Hence there are thirty terms in the sequence.
The sum of the first n terms is given by:

The sum of the first 30 terms is given by:



Need more info I can help just do not know what the question is