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?
Question 4 options:

1. C(n) = 449.99 + 55.35n

2. C(n) = 449.99 + 664.20n

3. c(n)=449.99+55.35n

n

4. c(n)=449.99+664.20n

n