6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6. Find an inequality involving an absolute value that describes the set. (Let x represent a real number in the set.)
a) |x| < 7
b) |x| ≤ 6
c) |x| > 6
d) |x| ≥ 7