-1/2 is what I would choose.
Answer:
x should =43.2 so if you are supposed to round it would equal 40
Answer:

Now since we have the same units for the scale model and the real one we can find the scale factor like this:

And we can conclude that the scale factor is 1:8 and that represent that the real object is 8 times larger than the scale model
Step-by-step explanation:
For this problem we know that the scale model had a widthof 6 inches. And the actual model has a width of 4ft. First we need to convert the 4ft to inches and we got:

Now since we have the same units for the scale model and the real one we can find the scale factor like this:

And we can conclude that the scale factor is 1:8 and that represent that the real object is 8 times larger than the scale model
Answer:
6x - 18
Step-by-step explanation:
3 x 6 = 18, so thats how you get the 18 in the answer
3 x 2x = 6x, which is how you get the 6x
and theres a subraction sign so we know to put a - there.