What is 2 plus 2 100 points don't want them

With #! i’ve tried to figure it out but i can’t.

Which of the following is the true for f(x) = 5cos

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.