What is the equation of this line? a- y=2x−3 b-y=−12x−3 c- y=−2x−3 d- y=12x−3

Rick is driving to his uncles house in greenville,which is 120 miles from ricks town .after covering x miles rick she's a sign stating that greensville is 20 miles away. which equation when solved will give the value of x. a: x+120 = 20 b: x x120 =20 c: x +20 equals 120 d: x x20= 120