What plus what equals 180

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.

If g^-1(x) is the inverse of g (x) which statement must be true

This is about circle theorems. someone asap : (