Evaluate the integral. 
A. 
ln
+ 
ln
+ C
B. 
ln
- 
ln
+ C
C. 
et ln
- 
et ln
+ C
D. 
ln
- 
ln
+ C
Answer: B
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Solve the problem.Find the centroid of the first-octant portion of a solid ball of radius 2 centered at the origin.
A. (
, 
, 
) = 
B. (
, 
, 
) = 
C. (
, 
, 
) = 
D. (
, 
, 
) = 
Find the center and radius of the circle.(x - 4)2 + (y + 2)2 = 9
A. Center: (-2, 4); radius: 9 B. Center: (-2, 4); radius: 3 C. Center: (4, -2); radius: 3 D. Center: (4, -2); radius: 9
Solve the problem.Suppose that an insect population density, in thousands, during year n can be modeled by the recursively defined sequence: 
.Use technology to graph the sequence for n = 1, 2, 3, . . . , 20 . Describe what happens to the population density function.
A. The insect population stabilizes near 11.65 thousand. B. The insect population stabilizes near 12.58 thousand. C. The insect population increases every year. D. The insect population stabilizes near 8.45 thousand.
Give the equation of the horizontal asymptote of the rational function.g(x) = 
A. None B. y = 0 C. y = -5 D. y = 9