9. Let T be the closed region in the first quadrant of the xy-plane bounded by x = 0, x = 1, y = x, and y = x3 + 1. What is
A. 14/3
B. 52/9
C. 56/9
D. 20/3
E. 172/9
Solution: The answer is B
The region T is graphed below
So,
