What is fourteen divided by 168.56

Two variables, x and y, vary inversely, and x=12 when y=4. what is the value of y when x=3?

With alll of except for the 2 that i did already

At the county fair, the baxter family bought 6 hot dogs and 4 juice drinks for $12.90. the farley family bought 3 hot dogs and 4 juice drinks for $8.55. find the price of a hot dog and the price of a juice drink.