What is the value of x and y?

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.

What is the approximate value of  x  in the equation below.–3.396–0.7080.3040.955

Which equation represents h for right triangle abc