When solving a problem what does mean ?

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.

You paid 28.00 for 8 gallons of gasoline. how much would you pay for 15 gallons of gasoline?

Reagan lives five miles farther from school than vanessa lives. write an expression to describe how far reagan lives from school