Please help i need this done soon! use the image for all questions.
1.Which functions have maximum values at their vertex?
2.Which functions have minimum values at their vertex?
3.Which functions have the same y-intercept?
4.Compare functions D and H. Which function has a lesser minimum value? Explain how you know
5.Look at functions G, E, and C. Which of these functions have at least one negative root?

sorry i dont know about this one

Step-by-step explanation:

54 km / hours

step-by-step explanation:

we need to convert seconds to hours

60 seconds = 1 minutes

60 minutes = 1hour

15 m         60 second   60 minutes

  * *         = 54000 meters/ hour

second     1 minute             1 hour

now we need to convert meters to km

1000 m = 1 km

54000 m       1 km

*   = 54 km / hours

hour               1000m