Question: A cell phone plan has a basic charge of $35 a month. The plan includes 400 free minutes and charges 10 cents for each additional

  1. A cell phone plan has a basic charge of $35 a month. The plan includes 400 free minutes and charges 10 cents for each additional minute of usage.
  2. (a) (3 points) Write the monthly cost C as a function of the number x of minutes used, and (b) (1point) graphC asafunctionofxfor0x600.

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