I need help identifying if it's a cube or square root function

According to the data set, where should the upper quartile line of the box plot be placed?

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 9 + 12x + 4x^2

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.