There is not enough information here to solve this question.
I just wanted to say that 912 miles per hour on a bike is a little fast :))
8-the formula to find an exterior angle of a polygon is:
360/n
(n is the number of sides of the polygon)
so the answer is 40

9 - the formula to find an interior angle of polygon is:

so the answer is 135

good luck
Equation: f(x)=(1/5)x^2 or f(x)=(0.2)x^2
Check:
f(0)=(1/5)(0)^2
f(0)=(1/5)(0)
f(0)=0✓
f(5)=(1/5)(5)^2
f(5)=(1/5)(25)
f(5)=5✓
5 (x+16)
I hope it helps you
The nearest hundreth is .300