1. Find the slope of the line tangent to the graph of the function at the given value of x. f(x) = x2 at x = 2.
2. Solve. -4x + 19 ≤ 12x - 2.
3. A soda can is 8 inches tall and has a diameter of 5. Calculate the surface area in terms of x.
4. The high school track and field 4x400m relay team ran a time of 3:48.26. What is the average time for each 400m?