There is a way and you will find it but not from me
Answer:
(4+x)>6
See "the sum of 4 and x" means '4+x' and "greater than 6" means the other number ,aka x which equals 4+x, is greater than six. So, the answer comes out to be (4+x)>6.
Its intersection would be at the centre of the sphere, each line being perpendicular to the other, probably
Answer: The inverse is f^-1 (x) = x - 11
