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Mathematics, 23.11.2020 04:20 ewalchloe5067920
Trudy bought a $20 prepaid long distance phone card. for every minute that she talks, $0.25 is deducted from her card. The function f(m)=20-0.25m represents the amount of money f(m) she has left after talking m minutes. FInd the zero and explain what it means in the context of the situation.
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Trudy bought a $20 prepaid long distance phone card. for every minute that she talks, $0.25 is deduc...
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