The surf instructor has an initial fee of $12 and charges $8 per hour for lessons which is represented by the equation Y equals 8X +12 where X is the number of hours and y is the total cost

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.