Solve.Gary has to choose between two calling plans for his local phone service. Plan A charges a monthly fee of $45 regardless of how many local calls are placed. Plan B charges $15 per month plus $0.50 for each local call placed. Express each plan's price structure, y, in terms of number of calls placed, x.
A. Plan A: y = 45
Plan B: y = 15x + 0.50
B. Plan A: y = 15
Plan B: y = 0.50x + 45
C. Plan A: y = 45
Plan B: y = 0.50x + 15
D. Plan A: y = 45x
Plan B: y = 0.50x + 15
Answer: C
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A. 
- 
= 1
B. 
- 
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C. 
+ 
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D. 
- 
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