Supp 10. What is the slope of the curve y = 2x2 - 4x as it passes through the origin? 11. What is the equation of the line tangent to the graph y = x2 + 1 at the point (1,2)? 12. The distance a body falls is a function of time and is given by x(t) = 5t + 10t 2. Find its velocity at t = 3 13. Water is spilling out of a tank with a leak at the bottom. After t hours, there are t + vt liters that had spilled out. At what rate is the water spilling out at t = 9 minutes? 14. A balloon with a shape of a sphere is filled with air at a rate of 1 cubic meter per minute. Compute the time rate of change of its surface area if it is already filled with 367 cubic meters of air. 15. Determine the dy/dx of arcsin = = x - y