List the first n terms of the geometric sequence satisfying the given conditions.a1 = 
, r = -9, n = 4
A. 
, - 
, 
, - 
B. 
, - 
, - 
, - 
C. 
, - 
, - 
, - 
D. 
, - 
, 
, - 
Answer: D
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Reduce the index of radical.
?
?
A. 
?
B.
?
C.
?
D. (x + 1)
?
E.
Solve the problem.An exterminator activates an aerosol "fogger" in a large auditorium. The concentration of insecticide immediately afterwards can be modeled by the function C(x, y, z) = -0.0001 ln
,where x, y, and z are measured in feet from a particular floor-level corner of the room. To escape the insecticide, a flying insect located at 
needs to fly immediately in the direction of greatest decrease in concentration. Find the unit vector indicating the direction the insect should fly.
A. u = 
B. u = 
C. u = 
D. u = 
Find the inverse of the function.f(x) = 
A. f-1(x) = 
- 
B. f-1(x) = 
C. f-1(x) = 
- 
D. f-1(x) = 
- 
Find the distance between the point P(5, 3) and O(0, 0). ? Enter as a radical expression or an integer.
What will be an ideal response?