MATH HELP NEEDED ASAP PLZ!

You purchased 8 pounds 10 ounces of candy from a candy shop. you want to split it equally among 3 classrooms at a local school.

F(x)= 1/x-4, g(x)=4x+1/x a. use composition to prove whether or not the functions are inverses of each other. b. express the domain of the compositions using interval notation.

Which inequality is equivalent to -3x < -12? x < 4 , x < -4 , x > 4, x > -4