Find all cube roots of the complex number. Leave answers in trigonometric form.-125i
A. 5 cis 90°, 5 cis °210, 5 cis 330°
B. 5 cis 30°, 5 cis °60, 5 cis 90°
C. 5 cis 90°, 5 cis °180, 5 cis 270°
D. 5 cis °210, , 5 cis 270°, 5 cis 330°
Answer: A
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Find the sum Sn of the first n terms of the geometric sequence. 
, 
, 
, 
, 
, . . . ; n = 12
A. 132857
B. 132859
C. 
D. 132860
Solve the formula for the specified variable.
+ 
= c for b
A. b = 
B. b = 
- a
C. b = ac - 
D. b = 
Give the inverse of the statement, “If it is a pine tree, then it has cones.”
(a) If it does not have cones, then it is not a pine tree. (b) It does not have cones. (c) If it is not a pine tree, then it does not have cones. (d) If it has cones, then it is a pine tree.
Use the graph shown to determine if the limit exists. If it does, find its value.
f(x)
A. 5 B. 4 C. 3 D. does not exist