Someone help me please hellp mee

Find the center and the radius of the circle with the equation: x^-2x+y^2+4y+1=0

Choose the form of the modifier that best completes the sentence. jerry can play dominoes better anyone anyone i've ever seen anyone else i've ever seen anyone i've never seeb

What do the excerpts have in common? both point out the tragic nature of situations in which children make journeys without their parents. both describe what immigrant children must do to survive when traveling to the united states. both explain why most children want to leave central america without their parents. both indicate the tragic problems and their consequences that children in central america must face.