A bouncing tennis ball starts at a height of 6 feet off of the ground, this is 72 inches off of the ground. Each time it bounces it comes back up to 2/3 of the height. Which answer choice shows the correct explicit equation in inches, and shows the value for x (the number of bounces) when the ball will be less than an inch off of the ground?

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