THIS IS FOR A BIG TEST FOR MY SCHOOL TO GRADUATE THIS IS WORTH 100 POINTS IF U ANSWER CUMULATIVE REVIEW CHAPTERS 4-7 I NEED A RUN DOWN OF THE BASIC FORMULAS

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.