Neil reads equal numbers of pages of a book every week. The graph shows the number of pages of the book left to read, y, after x weeks: A graph titled Neil’s Book Reading shows Number of Weeks on the x-axis and Number of Pages Left on the y-axis. The scale on the x-axis shows numbers from 0 to 5 at increments of 1, and the scale on the y-axis shows numbers from 0 to 315 at increments of 45. A straight line joins the ordered pairs 0, 225 and 1, 180 and 2, 135 and 3, 90 and 4, 45 and 5, 0. Which equation best models the relationship between x and y? y = −5x + 45
y = −45x + 315
y = −5x + 225
y = −45x + 225

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