Paperback
$2.50
hardcover
$4.50
you are buying paperback and hardcover
books at a book sale. you can spend
at most $20. what are the possible
combinations of paperback and hardcover:
books that you can buy?

Will mark determine whether the conjecture is true or false. give a counterexample for any false conjecture. given: points r, s, and t conjecture: r, s, and t are coplanar. a) false; the points do not have to be in a straight line. b) true c) false; the points to not have to form right angles. d) false; one point may not be between the other two.