Question

Someone please help asap

Answer 1

Answer: A

Explanation:

Substituting into vertex form, we get that:

`f(x)=a(x-10)^(2)`

Where a is a constant.

Now we know that it passes through the point (0, -25), so we can use that to find a.

`-25=a(0-10)^(2)\\-25=100a\\a=-1/4`

So we get that
`f(x)=-(1)/(4)(x-10)^(2)`