Which graph represents a function?

is it any of these ? i cant enter 2 photos :( .

How many real and imaginary solutions does the equation x^2-3x=-2x-7 have?

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

Which container holds more,a half gallon milk jug or a 2 liter juice bottle