Lee's mural is a triangular shape. Each side is 5 feet long. His friend's mural is the same shape, but he enlarged it to 12 feet long. What scale factor did Leo's friend use to create the mural from the original?

*
1 point
0.42
12
2.4
3

To find the scale factor, divide the length of Leo's friend's mural by the length of the original mural: 12 feet / 5 feet = 2.4.

Therefore, the scale factor used by Leo's friend to create the mural from the original is 2.4.