A dentist’s office and parking lot are on a rectangular piece of land. The area (in square meters) of the land is represented by $x^2+x-30$x2+x−30 . A rectangular piece of land is shown. Its length is labeled x plus 6 meters. A dentist’s office in the shape of a rectangle is on the land. Its length is labeled x meters and its width is labeled x minus 8 meters. A parking lot is paved along south and the east sides of the office. a. Write a binomial that represents the width of the land. () m b. Find the area of the land when the length of the dentist’s office is 20 meters. m2