Idon't understand this!
-growls- btw it's #28 and i tried to fit in the first 2 columns on the graph because you need those for the question.

The multiplication property of zero states that the product of any number and 0 is 0. what must be true about either a or b to make ab=0

Which of the following represents a number squared is equal to twenty more than nine times that number ? a) x squared = 9x + 20 b) x squared = 20x + 9 c) x squared > 9 + 20x d) x squared = 9 + x + 20

Arace is 10 kilometers long. markers will be placed at the beginning and end of the race course and at each 500 meter mark. how many markers are needed to mark the course for the race?