Here are some problems from a practice test that I couldn't get(Kept getting weird numbers), if anyone knows help would be appreciated

1. Find a vector V tangent to graph $\displaystyle f(x)=x^2+4x+3$ at the point (2, 19)

2. Object A is at $\displaystyle r(t)=<t^2+3t, 7-2t, 4cos(t-2)>$

Object B is at $\displaystyle s(t)=<5t, t^3-5, 3t-2>$

They crash at point (10, 3, 4) when t=2. What is the angle of the crash?

3. Determine the distance from P=(9, 2, 7) to the plane x+2y+3z=6