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Un article trouvé pour ce sujet.
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A long distance call |
2005-12-05 |
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A student pose la question :
The Small World long distance phone company charges 55cents for the first minute of a long distance call and 23cents for each additional minute.
1. How much would a 10- minute long-distance call cost?
2. If a call costs $4.55. how long did the call last?
3. Write an equation for the total cost, C, of an m-minute long-distance call.
Penny Nom lui répond. |
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