The standard form of equation of parabola is (x-h)^2=4p(y-k) where the directrix is y=k-p and the vertex is as point (h,k).
Thus given that the vertex is at (0,0)
y=k-p
the value of p will be:
-4=0-p
p=4
thus the equation will be:
(x-0)^2=4*4(y-0)
x^2=16y
hence;
y=1/16x^2
the answer is y=1/16x^2
<span>
0.0392 or 3.92%</span>
The exponential growth formula can find the interest rate.

y - tolat value (P +I) (216)
a - principal (200)
r- rate (unkown)
x - time in years (2 yrs)
Substitute known values

divide both sides by 200

take the square root of both sides

subtract 1 on both sides
r = 0.0392 or 3.92%
Answer:
85in²
Step-by-step explanation:
s = side
triangle: ((b x h) ÷ 2) x 4
((5 x 6) ÷ 2) x 4 = 60in
square: s2(squared not 2)
5² = 25
total sa: 25 + 60 = 85in²
1. is 5 seconds
2. would be about 105 because is goes a tiny bit over 100