What is the difference in length?? (i don't understand)

Click on the graphic until the one that best represents the statement is shown. two nonintersecting planes.

What is the factored form of the following expressions? d^2 – 13d + 36

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