With this question lisa bought 5 cds from a store. the price of each cd was the same. after she bought the cds, her account balance showed a change of −$64.95. what would have been the change to lisa's account balance had she only bought 1 cd from the store?
−$59.95
−$12.99
$12.99
$59.95

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