Ther are the anwser in the pictures please anwser its 7th grade

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.

Asap! i'm not good math and i'm lost.

If f(x) and g(x) are inverse functions of each other, which of the following shows the graph of f(g(x)