Answer:
His average speed for the rest of the journey was of 48mph.
Step-by-step explanation:
We use the following relation to solve this question:

In which v is the velocity, d is the distance and t is the time.
First 32 miles at an average speed of 64mph.
So the time for these 32 miles is:




Rest of the trip:
200 - 32 = 168 miles in 4 - 0.5 = 3.5 hours. So the average speed is of:

His average speed for the rest of the journey was of 48mph.
Surface area = 2 * ( height*width + height * length + width * length )
F(x)=3x^2+2x+1. if f(0), we need to plug it in to see the overall equation, so, f(0)=3(0)^2+2(0)+1. f(0)=1.