Question

Question #6cf1f

Answer 1

`64000`

Explanation:

If a quadratic has a negative leading coefficient, then you will have a maximum, and if you have a positive coefficient, then you will have a minimum.

Your minimum/maximum will always be the y-value of the vertex of the parabola.

So find the vertex using the formula (since this quadratic is in standard form):

`(-b)/(2a)="x-value of the vertex"`

Now plugin your new found x-value to find its paired y-value, and like I said, the minimum and maximum are always your y-value. And in this case, when plugging in your new x-value, `160`, you get `64000` as your y-value, which is also your maximum.