Question

V (x)=12-2x-5x when x =-2, 0 and 5

Answer 1

`v(x)=12-2x-5x`

You can simplify the equation:

`v(x)=12-7x`

To find the solution in a value of x you substitute the x by the given value:

x=-2

`\begin{gathered} v(-2)=12-7(-2) \\ v(-2)=12+14 \\ v(-2)=26 \end{gathered}`

x=0

`\begin{gathered} v(0)=12-7(0) \\ v(0)=12 \end{gathered}`

x=5

`\begin{gathered} v(5)=12-7(5) \\ v(5)=12-35 \\ v(5)=-23 \end{gathered}`