{(2, 3), (1, 5), (2, 7)} - NOT because 2->3 and 2->7 {(11, 9), (11, 5), (9, 3)} - NOT because 11->9 and 11->5 {(3, 8), (0, 8), (3, -2)}
- NOT because 3->8 and 3->-2
Explanation: Absolute value means <em>distance from zero</em> on a number line. So far the absolute value of 3, we know that 3 is 3 units from zero on a number line so the absolute value of 3 is 3.
There are 9 numbers less than 10. 1,2,3,4,5,6,7,8,9 And there are 2 multiples of 15. 15,30 There are 11 of the 40 cards that are either less than 10 or multiples of 15, so the answer is B