1. DS if x and y are positive integers, is the product xy even?
(1)5x-4y is even (2)6x+7y is even
2.PS which of the following lists the number of points at which a circle can intersect a triangle?
a. 2 and 6 only b. 2,4 and 6 only c. 1,2,3and 6 only d. 1,2,3,4and 6 only e. 1,2,3,4,5and 6
3. a certain library assesses fines for overdue books as follows. on the first day that a book is overdue, the total fine is $0.10, for each additional day that the book is overdue, the total fine is either increased by $0.30 or doubled, whichever results in the lesser amount. what is the total fine for a book on the fourth day it is overdue?