Answer:
From the points, the x coordinates are the same. With this similarity, the slope of the line would be undefined and it would result as an error to the point-slop formula of the line.
The answer you are looking for is "conditional".
1300.00 rent
50.00 phone
500.00 groceries (115 x 4 weeks = 460.)
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1850.00 (I'd say about 2000.00)