Given the following information, choose the brand that is the better buy.
brand a: $2.16 for 18 ounces
brand b: $1.50 for 12 ounces
brand c: $2.26 for 20 ounces
brand d: $1.95 for 16 ounces

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