Plzzz help with this

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 sin(x) = 0 and cos(x) = 1, what is tan(x)?

18 16 11 45 33 11 33 14 18 11 what is the mode for this data set