What is the answer to this question i need !

Vertex form of an equation for a parabola looks like this:
f(x) = a(x-h)² + k

(h,k) is the vertex. Just plug in the values (3,-2)
f(x) = a(x-3)² - 2

Now use the point (5,-1) to find "a" so that the equation goes through that point.

-1 = a(5-3)² - 2
-1 = a(2)² - 2
-1 = 4a - 2
-1 + 2 = 4a
1 = 4a
1/4 = a

put that into the equation to get the answer

f(x) = (1/4)(x - 3)² - 2

12 meters

Step-by-step explanation:

Since the ratio of the design to the photocopy is 2:3, multiply each side of the design by 3/2 to find the length of the photocopy's corresponding side.

The side correspondent to EH is AD, this means you must multiply side AD by 3/2 to find the length of EH.

8×3/2=12, The length of EH is 12 meters