What does the k in 450k stand for?

What is 74283.629 rounded to the nearest hundredth? What is thirteen twenty-fifths as a percent? What does a union b always equal to? What statement has the form if a then B then this means if a is true b is always true? Is a gloves mass 1 gram? Round 2104 to the nearest hundred? Another name for the 10 foot line? How are these numbers alike 121 225 4 169 196 and 400? What is the hypotenuse of a 30-60-90 triangle if the long leg is 4? How many kilogram is equal to ton? What is a fraction for 0.42? What is 3 equivalent fraction for 40 50? Does lighting come from the ground? How many days after ovulation will cervical mucous dry up? What is the check step of the quotient 3 and a Half? How do you model 6.73 rounded to the nearest tenth as 6.7? What is the routing number for Bank of PI? What are the prime factors of negative 45? How do you write algebraic expression 25 times the quantity of 16 less than n? Who is the principle manager or head of the assessable unit with authority and responsibility over the internal controls of the assessable unit?