The charges for an international call made using the calling card for two phone companies are shown in the table. a. What is the length of a phone call that would cost the same no matter which company is used? b. Analyze Relationships When is it better to use the card from Company B?
Phone Company Charges
Company A 35¢ plus 3¢ per minute
Company B 45¢ plus 2¢ per minute
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