After h hours, she will have traveled: 70h miles
Answer:
1=5
2=3
3=6
4=7
Step-by-step explanation:
used a calculator
We will see that the vertex of the quadratic equation is at (1, 14)
<h3>
How to find the vertex of a quadratic function?</h3>
For a general quadratic:
![y = a*x^2 + b*x + c](https://tex.z-dn.net/?f=y%20%3D%20a%2Ax%5E2%20%2B%20b%2Ax%20%2B%20c)
The x-component of the vertex is at:
![x = -b/2a](https://tex.z-dn.net/?f=x%20%3D%20-b%2F2a)
In this case, we have:
![y = -2x^2 + 4x + 12](https://tex.z-dn.net/?f=y%20%3D%20-2x%5E2%20%2B%204x%20%2B%2012)
Then the vertex is at:
![x = -4/(2*-2) = 1](https://tex.z-dn.net/?f=x%20%3D%20-4%2F%282%2A-2%29%20%3D%201)
To get the y-component of the vertex, we need to evaluate in x = 1.
![y = -2*1^2 + 4*1 + 12 = -2 + 4 + 12 = 14](https://tex.z-dn.net/?f=y%20%3D%20-2%2A1%5E2%20%2B%204%2A1%20%2B%2012%20%3D%20-2%20%2B%204%20%2B%2012%20%3D%2014)
Then we conclude that the vertex is at (1, 14), so the correct option is d.
If you want to learn more about quadratic equations:
brainly.com/question/1214333
#SPJ4
Answer:
25 stickers.
Step-by-step explanation:
I hope this helps! Maybe you can mark this brainly? Hope you have a amazing day! <3