When you own a pet, there are one-time costs, such as a leash, and continuing costs, such as food. Suppose the one-time costs for owning a small dog are $180, and the continuing costs are $400 per year Which function models the average annual cost of owning a small dog for x years?

✔ f(x) = (180 + 400x)/x
The average annual cost of owning a small dog for 10 years is $
418
.
Plz show work