Each figure in the sequence is composed entirely of 1×1 shaded squares. If the pattern is continued, find the sum of the inner and outer perimeter of the 100th figure. [Note: in the 2nd figure the sum of the inner and outer perimeter is: 8 + 16 = 24 units.]

Tim earns $120 plus $30 for each lawn he mows.write an iniqualityvto represent how many lawns he needs to mow to make more than $310

What is the value of x? enter your answer in the box.

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