Please help me with this question?

Because of your favorite lemonade it is $3.84 for 3 gallons. write this as an unit rate

Express in the simplest form: (x^2+9x+14/x^2-49) / (3x+6/x^2+x-56)

Kayla made observations about the sellin price of a new brand of coffee that sold in the three different sized bags she recorded those observations in the following table 6 is $2.10 8 is $2.80 and 16 is to $5.60 use the relationship to predict the cost of a 20oz bag of coffee.