Unit 7 Contents

You will need a sheet of Centimeter Grid Paper and a ruler to complete this homework.

1. Professor Peabody tested Whizzo brand paper towels. He noticed a very interesting pattern in his data. Then his pet mouse, Milo, tracked ink across his data table. Look for a pattern in Professor Peabody's data.

1. Copy the data table on your paper and fill in the missing values.
2. Make a point graph of the data. Graph the number of drops on the horizontal axis and the area on the vertical axis. Use a ruler to fit a line to the points.
3. What would be the area of a spot made with no drops? Add this point to your graph.
1. Choose a point on the graph and use it to write the ratio () of the area to the number of drops.
2. Using fractions, write two ratios equal to the ratio in Question 2A.
1. What area would 6 drops make on a Whizzo brand paper towel? Show your work.
2. How many drops are needed to make a spot with an area of 28 sq cm? Show your work.