The letters x and y represent rectangular coordinates. write the following equation using polar coordinates (r, θ). x^2+4y^2=4

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.