Question

with the equation 3200-800x . what's the book value of the computer after 3 years. When will a computer have a book value of $2400.

Answer 1

To find the book value of the computer after 3 years we must evaluate the V(3), then, if

`V(x)=3200-800x`

The V(3) will be

`\begin{gathered} V(3)=3200-800\cdot3 \\ \\ V(3)=3200-2400 \\ \\ V(3)=800 \end{gathered}`

The value of the computer after 3 years will be 800.

To find the value year where the book will value 2400, we must put V(x) = 2400 and solve the equation for x, then

`\begin{gathered} V(x)=3200-800x=2400 \\ \\ \begin{equation*} 3200-800x=2400 \end{equation*} \\ \\ 800x=800 \\ \\ x=1 \end{gathered}`

Then, after 1 year the computer will value $2400