29. Given the position function s(t) = 3t^2 + 10, where s(t) is in miles and t is in hours, find:
- the velocity v(t)
- the acceleration a(t)
- the velocity when t = 2
- the acceleration when t = 2.
30. True or False? If a function f is continuous at the point (1, f(r)), then it is differentiable at the point (t, f(z)). If true, then prove it. If false, then provide a counterexample.