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Given f(x)=3x-8,find the range for the domain {-4,2,7}pls show work

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Answer:

{-20,-2,13}

Step-by-step explanation:

Given f(x)=3x-8 for the domain {-4,2,7}.

When x=-4


\begin{gathered} f(-4)=3(-4)-8 \\ =-12-8 \\ =-20 \end{gathered}

When x=2


\begin{gathered} f(2)=3(2)-8 \\ =6-8 \\ =-2 \end{gathered}

When x=7


\begin{gathered} f(7)=3(7)-8 \\ =21-8 \\ =13 \end{gathered}

So, the range for the given domain is:


\{-20,-2,13\}

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