The graph represents the gallons of water in a water tank with respect to the number of hours since it was completely filled. у
500
450
0400
350
300
Water (gallons)
250
200
150
100
50
X
1
2
6
7
8
9
3 4 5
Time (hours)
The total capacity of the water tank is
gallons, and the rate of change is
gallons per hour
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Which of the following statements is true? a. the irrational number system is not closed under multiplication, because the product of two irrational numbers is always a rational number. b. the irrational number system is not closed under multiplication, because the product of two irrational numbers is not always an irrational number. c. the irrational number system is closed under multiplication, because the product of two irrational numbers is always an irrational number. d. the irrational number system is closed under multiplication, because the product of two irrational numbers is always a rational numbers. reset submit