SOLUTION: What is the domain of the rational function f(x)=3x-8/4x+20

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Question 696429: What is the domain of the rational function f(x)=3x-8/4x+20
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

f%28x%29=%283x-8%29%2F%284x%2B20%29...domain will be all real numbers x except x that makes denominator 4x%2B20 equal to zero
4x%2B20=0...>...4x=-20...>...x=-20%2F4...>...x=-5
so,