Answer:
45
Step-by-step explanation:
9x60=540
540/12= 45
The scale factor is 5
In the first image, you can see that the pre image square it 1 unit long and the image is 5. How do you get 1 to 5, you multiply by 5. So the scale factor is 5.
It's simply 4,2,0,-2..... the pattern is just subtracting two as you go on.
