please explain these,

1) If the linear correlation coefficient is -0.471, what is the value of the coefficient of determination?

0.222

-0.942

0.1942

-0.222

2) If the coefficient of determination is 0.233, what percentage of the data about the regression line is explained?

23.3%

5.43%

76.7%

46.6%

3) If the coefficient of determination is 0.822, what percentage of the data about the regression line is unexplained?

32.2%

6.7.6%

82.2%

17.8%