Jane is going to fence in her back yard. She has purchased 120 feet of fencing and knows that she wants to fence in a rectangular area where one side will be the back of her house. She knows her house is 25 feet across the back. Which of the following is the equation that Jane can use to figure out how far back from the house she can fence in?
Ax+x+25=120
B25x=120
Cx+25=120
D25(x+25)=120
Ax+x+25=120
B25x=120
Cx+25=120
D25(x+25)=120