How many stickers are sold per year?

Is -0.5 a rational number? Why does using standard measurement important? Is a ratio a comparison between two ratios? What is 100 sq ft equal to? How many times does the word cloud appear in the Bible? Is the opposite of isosceles? How many combinations of three numbers can be made from the numbers 1-19 for example 2-5-13 or 18-15-4 etc using each digit only once per combination? What has 4 sides with opposite sides are the same length and parallel? What is the factor or 2n2 plus 6n minus108? Is 371 a narcissistic number? What is 11x7? If 1 inch equals 5 miles how many inches is 150 miles? What are the Hindi Arabic numerals for XCCMXCIX? What is one kelvin equal to a change of temperature of how many degrees celsius? Is x2 plus 32x plus 64 a perfect-square trinomial.? Which is the fifth triangular number? How much is 621 pennies and 40 nickels and 90 dimes and 8 quarters? If 5 plus 3 is 28 what is 7 plus 3? What is the level of closeness between a measured quantity and the actual or standard value called? What are two challenges posed by the near-vacuum of space in twenty five words?