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Mathematics 8 Online
OpenStudy (anonymous):

find the domain of each rational function f(x)=3x-8/4x+20

OpenStudy (anonymous):

|dw:1316845956778:dw|

OpenStudy (anonymous):

exactly... when does this function become undefinable

OpenStudy (anonymous):

when the denominator is 0 so x cannot equal 5

OpenStudy (anonymous):

\[ x \neq -5\]

OpenStudy (anonymous):

\[(-\infty,-5),(-5,\infty)\]

OpenStudy (anonymous):

i couldn't find a union

OpenStudy (anonymous):

|dw:1316846182119:dw|

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