A sequence of transformations maps ABC onto ABC. The type of transformation that maps ABC onto ABC is a [blank] When ABC is refleted across the line x=-2 to form ABC, vertex [blank] of ABC will have the same coordinates as B.

Afarmer has a large field that is x feet in length. he wants to fence in a rectangular section in the middle of the field , leaving a length of 100 feet of open field behind each end of the fenced rectangle.he also wants the width of the fenced-in space to be 100 feet less than its length. find the expressions to represent the length and width of the fenced section of the field