Boxes of cereal usually cost $4 but they are on sale for $1 off a gallon of milk costs $3 the expression 4b -1b +3 can be used to find the cost in dollars of buying b boxes of cereal and a gallon of milk write the expression in simpler form

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