Answer:
D. 
Step-by-step explanation:
Any parabola is modelled by a second-order polynomial, whose standard form is:

Where:
- Independent variable, dimensionless.
- Dependent variable, dimensionless.
,
,
- Coefficients, dimensionless.
In addition, a system of three linear equations is constructed by using all known inputs:
(-2, 0)
(Eq. 1)
(4, 0)
(Eq. 2)
(0,-16)
(Eq. 3)
Then,
(Eq. 4)
(Eq. 5)
(Eq. 3 in Eqs. 1 - 2)
By Eq. 4 (Eq. 4b)

Then,
(Eq. 4b in Eq. 5)



The remaining coeffcient is:



The function that represents a parabola with zeroes at x = -2 and x = 4 and y-intercept (0,16) is
. Thus, the right answer is D.
Yes it's a 2 to 4 ratio but not enough info is here
Answer:
Low estimate
Step-by-step explanation:
2 5/6 rounded is 3 so the total would be 11 hours if everything is rounded.
Answer:
2kx+4y=20 ⇒ kx+2y=10
3x+6y=30 ⇒ x+2y= 10
k is the coefficient of x, so it is the slope of the line
- when k=1, both equations will be same, then there are many solutions
- when k=0 there is one solution
- when k is anything different, then the lines will be parallel, so no solutions
Y = 8x + 29 is the answer for your question