Can someone please help me on this geometry test, serious inquiries only, be a real one

Restrictions on f(x) = 1/x+5 and g(x) = x-2

Tod does not have any cookies. david gives jeff 8 cookies. then he splits half of the cookies he has left with tod. david let’s c represent the number of cookies that he starts with. he finds the number of cookies that tod has is 1/2 the difference of c and 8. write an expression to represent the number of cookies that tod has.

Which expression gives the exact value of x?