The population of the United States (in million people) is given in the bar graph. † A bar chart with 9 bars of unequal heights is titled "Population of the United States." The horizontal axis is labeled "Year." The vertical axis is labeled "Population (millions)." From left to right, the bars are as follows. The first bar is labeled 2000 and has a height of 282.2. The second bar is labeled 2002 and has a height of 287.6. The third bar is labeled 2004 and has a height of 292.8. The fourth bar is labeled 2006 and has a height of 298.4. The fifth bar is labeled 2008 and has a height of 304.1. The sixth bar is labeled 2010 and has a height of 309.3. The seventh bar is labeled 2012 and has a height of 314.1. The eighth bar is labeled 2014 and has a height of 318.9. The ninth bar is labeled 2016 and has a height of 323.1. (a) Define variables for this problem. Identify which is the independent variable and which is the dependent variable. Adjust the data if needed. independent variable t = time in years since 2000 Correct: Your answer is correct. dependent variable P = population of the United States in million people Correct: Your answer is correct. (b) Create a scatterplot and draw an eyeball best-fit line through the data. A line and several approximate points are in a coordinate plane. The horizontal axis is labeled "t". The vertical axis is labeled "P". The line enters the viewing window in the second quadrant and goes up and right. It crosses the P-axis at approximately P = 283. The first point is located at (0, 282), and is on the line. The second point is located at (2, 287), and is on the line. The third point is located at (4, 292), and is on the line. The fourth point is located at (6, 298), and is on the line. The fifth point is located at (8, 304), and is nearly on the line. The sixth point is located at (10, 309), and is nearly on the line. The seventh point is located at (12, 314), and is nearly on the line. The seventh point is located at (14, 318), and is on the line. The seventh point is loca