Help algebra have n

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.

I’m confused on how to work the pie charts

The distance between two points is 6.5cm and scale of map is 1: 1000 what's the distance between the two points