Which could be the first step in solving the equation represented by the model below? xx

II

Add 4 negative unit tiles to both sides.

Add 4 negative unit tiles to the left side, and add 6 negative unit tiles to the right side.

Add 4 positive unit tiles to both sides.

O Add 6 negative unit tiles to the left side, and add 4 negative unit tiles to the right side.

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