Different stores across the country sell a book for different prices. The table shows the price of the book in dollars and the number of books sold at that price.

price in dollars	number sold
11.25	53
10.50	60
12.10	30
8.45	81
9.25	70
9.75	80
7.25	120
12	37
9.99	130
7.99	100
8.75	90

1. Draw a scatter plot of this data. Label the axes.

2. Are there any outliers? Explain your reasoning.
3. If there is a relationship between the variables, explain what it is.
4. Remove any outliers, and draw a line that you think is a good fit for the data.

Using the data in the scatter plot, what can you tell about the slope of a good model for this data?

Here is an unbalanced hanger diagram.

1. If you know each circle weighs 6 grams, what do you know about the weight of each triangle? Explain your reasoning.
2. If you know each triangle weighs 3 grams, what do you know about the weight of each circle? Explain your reasoning.