Question

The photo below being enlarged to form a 16×20 inch print. What is the scale factor being used to enlarge it.

Answer 1

$\begin{gathered} \text{scale factor = }\frac{\text{new length }}{\text{ initial length}} \\ =\frac{16in}{4in\text{ }}\text{ or }\frac{20in}{5in} \\ \\ =\frac{4}{1} \\ T\text{he scale factor is 4} \end{gathered}$