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Carlos buys a phone that cost $250. He pays a monthly rate of $75. What is the independent variable of this function ?
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Carlos buys a phone that cost $250. He pays a monthly rate of $75. What is the independent variable of this function ?

User Trav
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Answer: 250+75x

Step-by-step explanation: 250 is the flat charge on the phone, and he pays 75 dollars as a monthly rate. x represents the amount on months.

User Abhinab Kanrar
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