Answer:
A)
Blue: 
Red: 
B)
Blue: 
Red: 
C)
No the experimental probabilities found in "A" are not equal to the probabilities found in "B". The sample size of the the experiment was not large enough to reflect the actual probability.
D)
Blue: 80
Yellow: 50
Red: 40
Orange: 30
If you are asking if your work is good,thn yes,you are right
Risk - 5 = 16. It is just mathematical language.
the picture in the attached figure
Step 1
Find the perimeter of the scaled-down model of a walkway (Quadrilateral ABCD)

Step 2
Find the scale factor
if Quadrilateral ABCD is similar to Quadrilateral EFGH
then


Step 3
Find the perimeter of the actual walkway (Quadrilateral EFGH)



therefore
the answer is

<span>−3(1.5n−1) is correct </span>