SOLUTION: A cable tv bill consists of a fixed monthly charge and a variable charge, which depends on the number of pay per view movies ordered. In January the $44 bill included four pay per

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Question 668145: A cable tv bill consists of a fixed monthly charge and a variable charge, which depends on the number of pay per view movies ordered. In January the $44 bill included four pay per view movies. In February the $54.50 bill included seven pay per view movies. Determine the fixed monthly charge and the cost for each pay per view movie.
Answer by ReadingBoosters(3246) About Me  (Show Source):
You can put this solution on YOUR website!
44 = 4x + y
54.5 = 7x + y
...
Multiply the first equation by -1
-44 = -4x -y
Add to the second equation
-44 + 54.5 = -4x + 7x - y + y
10.5 = 3x
highlight_green%28+x+=+3.5%29 per movie
...
44 = 4(3.5) + y
44 - 14 = y
highlight_green%28y=30%29 fixed monthly charge
...
..............
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