Find the numbers at whichfis discontinuous and determine whetherfis continuous from the right, or from the left, or neither.

All three of these are continuous, so the only points where it cant be are the boundries. I plug in 0 for 6+x^2 and 7-x and the limits dont match. I do the same between 7-x and (x-7)^2 with 7 and get a see that is is continuous. Would x=0 be correct?