[(36,000,000)(0.000003)^2]divided(0.00000006)

Question: What is the unit vector in the direction of vector A = (3, 5) + (2, 1)?

What is the median of a set with 9 numbers if the first 4 are 2, 5, 7, and 10?

Math question: Find the limit as x approaches 0 of (sin(2x) - 2x) / (e^x - 1).