For what value of x does f(x)=-4 July 8, 2019 16 32 64 128 For what value of x does f x )=- 4 The function f is defined by f(x)=4x.for what value of x does f(x)=8 For what value of x is f x )=- 4 F of x problems For what value of x is the function h above undefined