To paint a house, a painting company charges a flat rate of $500 for supplies, plus $50 for
each hour of labor.
y=500x150
4,000
3,000
y (dollars)
2,000
1,000
g
10
20
50
60
30 40
x (hours)

how much would the painting company charge to paint a house that needs 20
hours of labor? a house that needs 50 hours

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