Answer:
401.92
Step-by-step explanation:
3.14 x 16²/2 is the formula for the area of a semicircle. Hope this helps.
Vertex: (5, -9)
fix = (x-8)(x-2)
fix = x^2 - 2x - 8x + 16
fix = x^2 - 10x + 16
a = 1, b = -10, and c = 16
To find vertex:
x = -b/2a
x = -(-10)/2(1)
x = 10/2
x = 5
y = 5^2 - 10(5) + 16
y = 25 -50 + 16
y = -9
$39.20
$49 * (1-.2) = $39.20