If f:RR be defined by f(x) = (x1) show that (fof) () = -1

Aportion of a line bounded by two points is defined as

You and a friend went to the movies. you spent half your money on tickets. then you spent 1/4 of the money on popcorn, $2 on candy, and $3 on a soda. if you have $1 left, hiw much money did u take to the movies?

For the inequality |c| < |d| to be true, which of the following must be true?