If a person has 3 apples and he ate 2 how many apples are left

For which pair of functions is (gof)(a)=|a|-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.

Does the point (1, sqrt 7) lie on circle shown.