Question

you are trying to upload a photo for your school picture,but you need to reduce the size of the photo by a quarter of its original size. Which is the correct power that will reduce the picture by a quarter?A: 2^2B: 2^4C: 2^-2D: 2^-4

Answer 1

the scale factor is 1/4, which is equivalent to:

$\frac{1}{4}=\text{ }\frac{1}{2^2}=2^{-2}$