80% of 4000 is 3200, so 800 disagreed, and 3200 agreed.
Answer:
Step-by-step explanation:

n = 2
2)

n = -4
If its a reflection across the y axis the x value is reflected and the y value stays the same, so (-3,7)
Rectangle
l = 7.2 - 1.7 = 5.5 ft b = 3.4 ft
Semicircle
r = 1.7 ft
Shaded region = area of rectangle + area of semicircle
= l x b + πr²/2
= 5.5 x 3.4 + 3.14 x 1.7 x 1.7 x 1/2
= 18.7 + 4.5373
= 23.2373 ft²