4. A real 3cm bug is drawn to be 10cm in a picture. What scale factor was used?

In the picture, the bug is drawn to be 10cm. In reality, however, the bug is only 3cm.

To find the scale factor, we divide the length in the picture by the actual length:

Scale factor = Length in the picture / Actual length
Scale factor = 10cm / 3cm
Scale factor ≈ 3.33

Therefore, the scale factor used to draw the bug is approximately 3.33.