What does i c stand for?

What is the rule for missing numbers? How many 1916 d dimes did they make? Is the square root of 9 a whole number? What Arc that measures less than a semicircle? What is the best unit for measuring amount of soda? What is the LCM of 48 and 96? How many degrees is a quadrilateral? How do you change cm square to meter square? What does slope tell you? 59/6785? What is the surgace area of a cylindrical ring or torus if its outside diameter is 16mm andits inside diameter is 10mm? What is expansion postulate? What is 576 divided by 7? How do you write two hundred seventy four million nine hundred fifteen thousand in expanded form? What is 4.012 written in word form? What is 7 over 14 simplify? What is ONE and ONE half plus three eighths? What it the GCF of 895 and 49125? What is 1 thousand times 1 billion? What does She stumbled over her lines mean?