1) ??? Unclear - but the only one times -4 that is greater than 9 is -3. Or all: If (9 less than the product of a number) AND (-4 is greater than 7) THEN... Clause 1 is true (9 is less than a product), but clause 2 is false, TRUE AND FALSE = FALSE, and since FALSE => XXX is true for any X then any of the answers could be right. 2) Of course the $70 dollar shoes are better. Reason 1: they are cheaper: if you have $200 and use 70 to buy shoes and invest the other 130, the interest will make up the difference in cost. Even bank interest of a few percent should be plenty. Reason 2: fashions change, for about the same money you get 3 pairs of shoes, meaning you are more stylish for the 7 years Reason 3: New shoes look better than older shoes, even if they are good quality. For the same money you get new shoes 3 times instead of once Reason 4: you might die in 2 years, and your heirs would prefer $130 to a pair of used shoes.