Answer:
Measurement error. Took the quiz and got it right.
Step-by-step explanation:

Using the index law
![a^{ \frac{m}{n}} = (\sqrt[n]{a} )^m](https://tex.z-dn.net/?f=a%5E%7B%20%5Cfrac%7Bm%7D%7Bn%7D%7D%20%3D%20%20%28%5Csqrt%5Bn%5D%7Ba%7D%20%29%5Em)
![\sqrt[3]{6859}=19](https://tex.z-dn.net/?f=%20%5Csqrt%5B3%5D%7B6859%7D%3D19%20)
, so we can also write this as
![( \sqrt[3]{19^3} )](https://tex.z-dn.net/?f=%28%20%5Csqrt%5B3%5D%7B19%5E3%7D%20%29)
Answer: TRUE
Let h=height of water
Let r=radius of water surface
r/h=16/8 =2, so r=2h.
The volume of water is:
v=(1/3)×π×r²×h
=(1/3)×π×(2h)²×h
=4/3πh³
dv/dh=4πh^2
By chain rule:
dv/dt=dv/dh×dh/dt
but
dv/dt=4
thus:
4=(4πh)×dh/dt
dh/dt=4/(4πh²)
when h=6cm we have:
dh/dt=4/(4π6²)
=0.00884 cm³/min
So the equation of the red graph is already given to us:
. I assume you meant the blue graph?
We can use the vertex form:
, where
is the vertex. (We can ignore
because
is 1 for this graph.) Remember that the vertex is the maximum or minimum of a parabola and the point that the line of symmetry passes through. For f(x) the vertex is (0,0).
The vertex for
is at
on the coordinate plane. (4 left, 2 down)
Plug into the vertex form:

The double negative becomes a positive, and then you're done:

The slope-intercept form:

m - slope
b - y-intercept
We have the slope m = 4. Substitute:

Put the coordinates of the point (2, -3) to the equation of a line:

<em>subtract 8 from both sides</em>

<h3>Answer: y = 4x - 11</h3>