The answer is 3/10y^2 - 25y - 500. Glade I could help!
Answer:
(86.2,0) is the x-intercept.
Step-by-step explanation:
You can use the slope formula to figure this one out:
Just use two of the points on the table, any of them will work:


Now you have the slope of the equation, now using the y-intercept equation you can substitute the variables for point of the table and the new slope.:

Now just solve for b to get the y intercept:

Now you have the y-intercept so you just have to plug in 0 to the y spot and it will calculate the x-intercept.

And that's the x-intercept.
C.
This is because the x vale is clearly after the 6 and the y value is right on 5