Final answer:
The scale factor between an image that is 5 inches wide on the transparency and 25 inches wide on the screen is calculated as the size on the screen divided by the size on the transparency, which is 5.
option b is the correct
Step-by-step explanation:
The student is asking about the scale factor between the size of an image on a transparency and the size of the same image when projected onto a screen. To find the scale factor, we compare the size of the image on the screen to the size of the image on the transparency.
To calculate this, we use the formula:
Scale Factor = Size of Image on Screen / Size of Image on Transparency.
So in this case:
Scale Factor = 25 inches / 5 inches.
Hence, the scale factor is 5.
This means that every inch on the transparency corresponds to 5 inches on the screen, indicating that the image on the screen is 5 times larger than the image on the transparency.