Answer: scale factor = 1.5
Step-by-step explanation:

Given: Triangle ABC is a scaled copy of triangle DEF.
Side AB = 12 cm and is the longest side of ABC.
Side DE = 8 cm and is the longest side of DEF.

AB is corresponds DE (longest side of both triangles)
So, 
Hence, the scale factor = 1.5.
-1.1-1.9, 1.9,1.1,2.1,-3.9,3.-9,-2.-1
X: -4. Y: -3
Step-by-step explanation:
<span>=<span><span><span><span>2b</span>+4</span>+<span>8b</span></span>+12</span></span>Combine Like Terms:<span>=<span><span><span><span>2b</span>+4</span>+<span>8b</span></span>+12</span></span><span>=<span><span>(<span><span>2b</span>+<span>8b</span></span>)</span>+<span>(<span>4+12</span>)</span></span></span><span>=<span><span>10b</span>+16</span></span>Answer:<span>=<span><span>10b</span>+16</span></span>
This question is funny because the total he has to walk from school back home is 12 MILES. The question tries to confuse you by using the term “two-thirds”. Here is my point: He only had to walk a total of twelve miles. Why would the answer be 16, 18, and 24 miles when he only has to walk 12??? This is just common sense and I wouldn’t overthink the question. I hope I helped! Glad I caught this. Have a great night.
~Brooke❤️