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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.

The parabola x= √y-9 opens: a.)up b.)down c.)right d.)left

Hello, i need compare km^2 and km. what's difference in this?