The answer is 14. If Jun already has 8 points, and answers 3 more questions that are each worth 2 points. It would be 3 times 2 which is 6. Then add 6 to 8. Which will be 14 :)
Let us try and solve it analytically. We have that the side=x+3 together with the short side=s and the diagonal=x+4 satisfy the Pythagorean Theorem. Then we have that . This yields which yields s^2=2x+7, hence a) is the correct answer.
. This yields 