B. Undoing Division Method: In this ratio, x is divided by 1505. You can undo the division by multiplying each side of the proportion
by 1505 like this:
(1605) = 1505 (1505)
Explain how this strategy works.
Are the two ratios still equal?
Why are both sides multiplied by 1505?
Simplify each side of the equation and find x.

d

step-by-step explanation:

range is infinite on both x and y axis positive and negative

step-by-step explanation:

let's cover over the formula of the vertex:

y = a(x – h)^2 + k

in this formula, (h,k) are the vertex, always remember that the positive or negative value of the vertex is based on the sign it has.

for example, if the vertex is -3,-6 then both the x and y value would have the positive sign attached to it and if it were a positive x and y value, then a negative sign would be attached to it.

with that being said, for our problem the x value is a positive one so we are looking for a number with a negative sign next to it, in this case the first and second choice.

however, for the first answer choice it isn't quite part of the formula so we know that the answer choice correctly displays the x value.

to confirm, we can see if the -1 fits correctly with the second answer choice, and as mentioned above a negative number will have a positive sign attached to it. so, for our problem we can see that -1 has been changed to +1, so we can confirm that the second answer choice is correct.

hence, our final answer is y=(x - 1)^2 + 1