How to express my answer an an equation

In the sixth grade 13 out of 20 students have a dog if there are 152 sixth grade students how many of them have a dog

What ia the sum if the first 7 terms of the geometric series

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