Arianna and hannah are conducting an experiment to test the difference threshold for sense of
touch on the forehead. for trial 1. hannah closes her eyes while arianna gently touches 2
paperclip points 3 millimeters (mm) apart on hannah's forehead. then hannah reports whether
she could feel 1 or 2 points. for each of the next trials, arianna and hannah repeat this process,
each time with the points 2 more mm apart. hannah reports feeling 1 point until the points are
15 mm apart, when she begins reporting that she feels 2 points. which inequality best
represents the trial numbers in which hannah feels 2 points?