In the diagram below of triangle HIJ, K is the midpoint of HJ and L is the midpoint of
IJ. If KL = -3x + 39, and
HI = 62 +18, what is the measure of HI?

Dana wants to identify the favorite professional baseball team of people in her community. she stands outside a local sporting goods store and asks every other person who enters, "what is your favorite professional baseball team? " will the results of her survey be valid? explain.