i think its twenty hours.....but dont take my word on it im not 100% on it
Answer:
x=3 and 1/2
Step-by-step explanation:
4x+7y=-14
8x+5y=8
2(4x+7y=-14)
8x+14y=-28
8x+5y=8
9y=-36
y=-4
8x+5(-4)=8
8x-20=8
8x=28
x=3 and 1/2
Given that the vertex of the parabola is (4,-3)
The parabola passes through the point (2,-1)
We need to determine the standard form of the equation of the parabola.
<u>Standard form of the equation of the parabola:</u>
The standard form of the equation is
where the vertex is (h,k) and a is the constant.
Substituting the vertex (4,-3) in the above equation, we get;
---------------(1)
Substituting the point (2,-1) in the above equation, we have;





Thus, the value of a is 
Substituting the value of a in the equation (1), we get;

Thus, the standard form of the equation of the parabola is 