Help me please pleaseee

Find the missing dimension! need asap! tiny square is a =3025 in ²

What are the interpretations of the line 3x - 15y = 60? x-intercept y-interception a: x 20 - y -4 b: x 5 - y 20 c: x -3 - y 15 d: x -4 - y 20

What is the definition of a surd.give an example.