New Science Question?

Question

Choose a realistic angle for banking on question b). I chose the co-efficient of 0.35 because "it is a good mid-way point between the dry and wet conditions. Since the car is travelling at high speed (50mph) friction must be lower to prevent high tyre temperatures and stop the car seizing."

It would be apreciated if anyone could attempt question c) too (feel free to correct any of my mistakes) best answer gets 10 points! Thanks.

Link to the picture: http://i318.photobucket.com/albums/mm418/ags911/DSC00218.jpg

Answer 1

way too complicated, and I can barely read it.