To evaluate \(8x\) at \(x=0.5\), we just have to plug in \(0.5\) wherever we see \(x\).
After substituting \(x=0.5\) for every value of \(x\), we then simplify.
So, on substitution, we have
\(8x=8(0.5)\)
Change the \(0.5\) to \(\frac{1}{2}\) to help you multiply easily.
\(\Rightarrow 8x=8\times \frac{1}{2}\)
Simplify to obtain,
\(8x=4\)
