Katelyn wants to buy a new cell phone. She decides to buy an iPhone 8 for a price of $449.99. She joins a plan with T-Mobile that will cost $55.35 per month for unlimited. Which of the following functions models the cost per year over the lifetime of the phone, C(n), in terms of the number of years, n, that she owns the phone?

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A:

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Sequence and Series

A sequence is defined as a collection of things. Series is defined to sum the things one by one in the sequence.  It was invented by German mathematician Carl Friedrich Gauss.