Answer
$i=-4.0cm$
Work Step by Step
We use the magnification equation in this problem: $$m=-\frac{i}{p}$$ Solving for $i$ yields: $$i=-mp$$ Substituting known values of $m=+0.25$ and $p=+16cm$ yields an image distance of $$i=-(0.25)(16cm)=-4.0cm$$
