First, subtract the monthly fee from the October bill, which would be $52.50.
Now, divide this by $0.10.
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Hope this helps! :)
The slope

and a point

that the line goes through, give us a equation for the line:
Answer: 15
Step-by-step explanation: Use the formula: 
Remember
should always be the hypotenuse or the longest side.
---> evaluate the exponents
----> subtract 12544 to the other side
---> take the square root of both sides

Answer: 0.41
Step-by-step explanation: 0.59 is 59%. To find the percentage of chance that it will not rain, you subtract 1 (which is 100%) minus 0.59. You get an answer of 0.41 (or 41% if you prefer.)