The table shows the minimum wage rates for the United States during different years.
Year minimum hourly wage
1978 2.65
1979 2.90
1980 3.35
1990 3.80
1991 4.25
1996 4.75
1997 5.15
2007 5.85
2008 6.55
2009 7.25 (a) Write the least squares regression equation that models the data. Let x = time in years since 1900 and let y = minimum hourly wage. (b) Use the equation to estimate the minimum hourly wage of a U.S. worker in 2025. Show your work.

The answer is B.   Because there are 8 ribbons in all. 1 ribbon is black. so the equation would be 1/8. Assuming you don't draw the black ribbon on the first try, then you would try again. The second time you draw a ribbon you don't put the ribbon you drew back in. That means there are only 7 ribbons the second time. The 1 black ribbon is still in the bag than the equation would be 1/7. Then you add the two together. So it would be 1/8 + 1/7 = 1/15. Remember to only add the bottom numbers. not the top ones unless they are different colors or objects.