Question

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

Answer 1

{-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\}`