Answer:
steps below
Step-by-step explanation:
f(x) = -2/5 * (x+1)² + 7
Parent function: f(x) = x²
Transformation: Vertical shift up 7 units and horizontal shift left 1 unit
reflect about the x axis (+) : parabola faced downward
compression:(+) *2/5
3.18%
(14/31) X (13/30)X (12/29) X (11/28) = 0.0318 = 3.18%
y= 3/5x
x = 9.9 in.
area of triangle = base * height /2
49 = x*x /2
49*2 = x^2
98 = x^2
= x
9.9 = x