Chapter R.1, Problem 12A

State whether the two sets A and B are equal. Justify

Express the statement as an inequality. q is less than or equal to .

Let S be the union of the two intervals (−∞,−6]\ and [−4,∞)Then S can also be described by the inequality |x−a|≥b how do you find a and b?

C and D  are sets of real numbers defined as follows. C={y|yless than or equal to 4}   D={y|y less than 7}   Write  C∩D  and  C∪D  using interval notation.If the set is empty, write  ∅ .