Option B , C and D are correct.

The values of k are 12.1 , 13.0 and 19.9

Step-by-step explanation:

Given the inequality: k > 12.

The boundary point is not included when the inequality is less than ‘<‘ or greater than ‘>’, and is represented by an open circle on the boundary point.

Also, the arrow goes to the right when the inequality symbol is greater than (>) or greater than equal geq.

since, the inequality  k > 12 as shown in figure below;

The solution of k which satisfy k > 12 are;

12.1 , 13.0 and 19.9 .