Matt bought a 20 pound bag of dog food for his dog, hunter. on monday hunter ate 1 pounds of the dog food. on tuesday, hunter ate 2 pounds of the dog food, and on wednesday hunter ate 2 . how much dog food is left in the bag?

How to do this , and can some one explain

He ! a group of farmers planned to clean 80 acres of wheat per day to finish the work on schedule. right before the work started, they received a new piece of machinery that them clean 10 more acres per day than originally planned. as a result of increased productivity in the last day before the deadline they only had to clean 30 acres. how many acres of wheat did the group of farmers have to clean?

The scatterplot represents the total fee for hours renting a bike. the line of best fit for the data is y = 6.855x + 10.215. which table shows the correct residual values for the data set?