经济学原理 A friend of yours is considering two cell phone servic
经济学原理
A friend of yours is considering two cell phone service providers.Provider A charges $120 per month.Provider B charge$1per minute for calls.Your friend's monthly demand for minutes of calling is given by the equation Q=150-50P,where P is the price of a minute .With each provider,what is the cost to your friend of an extra minute on the phone?
A friend of yours is considering two cell phone service providers.Provider A charges $120 per month.Provider B charge$1per minute for calls.Your friend's monthly demand for minutes of calling is given by the equation Q=150-50P,where P is the price of a minute .With each provider,what is the cost to your friend of an extra minute on the phone?
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