The company XYZ bought property for OMR 600,000 on 1 January 2017. The land element of the purchase was OMR 100,000. The expected life of the building was 30 years and its residual value nil. On 31 December 2019, the property was revalued to OMR 700,000, of which the land element was OMR 124,000 and the building – OMR 576,000. On 31 December 2020, the property was sold for OMR 680,000.

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

might be the correct answer will be question number 2

one triangle is 2.5 times bigger than the other triangle.