Mathematics, 02.03.2021 22:10, finedock

Southern Phone Company is promoting a new cell phone service plan: a customer can make up to 500 minutes of calls each month for $39.99. If the number of minutes used in a month exceeds 500, then the function c = 0.40(m − 500) + 39.99

describes the monthly charge, c, in dollars in terms of m, the total number of minutes used. Which of the following statements best describes this function?

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Southern Phone Company is promoting a new cell phone service plan: a customer can make up to 500 min...