Posted by Matthew on Saturday, January 23, 2010 at 12:27pm.
The price of an international call from Detroit to Paris, France, using a particular phone company is 75 cents for the first 5 minutes and 10 cents for each additional minute or fraction thereof. What is the cost (in dollars) of a 25 minute call from Detroit to Paris?

Math  Ms. Sue, Saturday, January 23, 2010 at 12:32pm
20(0.1) + 0.75 = ?
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