Answer:
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Answer:
circumference of pool=81.67
Step-by-step explanation:
C. 8k+17
in your expression you have:
(7k-4k+5k)+(13+10-6)=
=(8k)+(17)
The correct answer is the first option.
If you want to use elimination, you can sum the two equations for example, so that the x's simplify:



Plug this value for y in one of the equations to derive the value of x:

So, the solution is 
I hope this helps you
6/9
2.3/3.3
2/3
2:3