What is the perimeter of this tile? i need answers asapp!!

Which of the symbols correctly relates the two numbers below check all that apply 6? 6

What is the y-intercept of the line given by the equation

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