Answer:
![f(x)=x^2+6x+8](https://tex.z-dn.net/?f=f%28x%29%3Dx%5E2%2B6x%2B8)
Step-by-step explanation:
We are given zeros as x=-4, x=-2
so, we can set up function as
![f(x)=a(x+4)(x+2)](https://tex.z-dn.net/?f=f%28x%29%3Da%28x%2B4%29%28x%2B2%29)
Vertex is at (-1,3)
It means that graph passes through point (-1,3)
so, we can plug x=-1 and f(x)=3
and then we can solve for 'a'
![3=a(-1+4)(-1+2)](https://tex.z-dn.net/?f=3%3Da%28-1%2B4%29%28-1%2B2%29)
we get
![a=1](https://tex.z-dn.net/?f=a%3D1)
now, we can plug it back
and we get
![f(x)=1(x+4)(x+2)](https://tex.z-dn.net/?f=f%28x%29%3D1%28x%2B4%29%28x%2B2%29)
now, we can simplify it
![f(x)=x^2+6x+8](https://tex.z-dn.net/?f=f%28x%29%3Dx%5E2%2B6x%2B8)
The answer is D............
The answer To this is x=-35
Answer: $869.90 × 12 = $10,438.80.
Step-by-step explanation: