How many years is between 1987 and 2012?

What is a property that states that multiplying a sum by a number is the same as multiplying each addend in the sum by the number and then adding the products? Who invented your modern number system Arabic? How do you write 0.10 mm in words? Negative x to the second power positive five x plus twenty-four? How many hours in 3 fte? What is the percentage notation of 0.28? A loan of 5000 is made for 83 days at 6 percent what is the exact interest? How many hours are in 4 months? What is the coefficient of -8y5 and what is the degree of this term? What is 20 percent added on to 3000.00? What is 72 over 48 simplified? What is the area of a circle with a 3.35 in diameter? How much does 75 go into 375? What is 11 x12? What two numbers can be multiplied to get an answer of 293? Is room a countable noun? What is the smallest fraction of a second you can measure? What is the synonym and antonym of the word deter? What day of the week was May 12 1969? How do you get fishy smell out of ceiling tiles?

How many years is between 1987 and 2012?