a. Plot the data. Instructions: 1. Click the "Sales" line segment icon at the top right of graph. 2. Move your cursor to the approximate location for the first data point (x=1,y= first sales value). Left click to insert the point. Release the left mouse button. 3. Move your cursor to the approximate location for the second data point. Left click to insert the point (a line segment will automatically connect this new point to the previous point). Release the left mouse button. 4. Repeat the above step for the remaining data points. 5. Click anywhere on the line segment between two points. A gear icon should appear. Click it to open the "line properties" window. 6. Enter the exact coordinates for all 12 points. Click "ok" when finished