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A friend of yours is considering two providers of cell phone services. Provider A charges $120 per month for the service regardless of the number of phone calls made. Provider B does not have a fixed service fee but instead charges $1 per minute for calls. Your friend’s monthly demand for minutes of calling is given by the equation Qd= 150 – 50 P, where P is the price of a minute. a. With each provider, what is the cost to your friend of an extra minute on the phone? b. In light of your answer to (a), how many minutes would your friend spend on the phone with each provider? c. How much woul

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syed514

if I've understood the question correctly then:a) with provider A there is no extra cost per minute so 0, with B there is an extra cost of 1$b) with provider A she will be on the phne for 150-500=150 minutes and with provider B she will be on the phone for 150-501=100 minutes.

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