Someone help me with question 12 please I am very confused so I’ll appreciate it anybody helps me!

Determine which expressions represent real numbers and which expressions represent complex number. asaaap! plis!

Acylinder with a base diameter of x units has a volume of jxcubic units which statements about the cylinder are true? check all that apply. the radius of the cylinder is 2 x units. the radius of the cylinder is 2x units. the area of the cylinder's base is 200 square units. the area of the cylinder's base is a square units. the height of the cylinder is 2x units. the height of the cylinder is 4x units. mark this and return save and exit next submit

Which graph represents the linear function below? y-4= (4/3)(x-2)