Arectangular area has dimensions 432 feet by 345 feet. using front-end estimation on the dimensions, what is an estimate of the amount of fencing required to enclose the rectangular area? a. 1200 ft. b. 1300 ft. c. 1400 ft. d. 1600 ft.

Option C. 1400 ft

Step-by-step explanation:

we know that

In a Front End Estimation we keep only one number in the front and all the others became zeros

The perimeter of a rectangular area is equal to

where

L is the length and W is the width

we have

Applying front-end estimation

we have

Find the perimeter

sine

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