Plzz very fast make sure to reduce

Apositive number a or the same number a increased by 50% and then decreased by 50% of the result?

Which expression will have the same sum as 3_8 + 1/4?

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.