Answer: C
The x row goes up every time by two and the y decreases by 4.
6-4=2 ect...
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To find the total cost, you need to add these numbers together

you get 7.37 as your answer, but you need to round this to the nearest whole number.
rounding 7.37 will make it 7.
the total cost is about $7
Sorry people send you links instead of actually helping you
There are 4 vertices of a square to the right.