Find the nth term an of the geometric sequence.1, 
, 13, 13
, . . .
A. an = 13n-1
B. an = 13n/2
C. an = 13(n+1)/2
D. an = 13(n-1)/2
Answer: D
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Find (9x + 9)3 .Don't forget that (9x + 9)3 means (9x + 9)(9x + 9)(9x + 9).
A. 729x3 + 729x2 + 2,187x + 729 B. 729x3 + 2,187x2 + 2,187x + 81 C. 729x3 + 2,187x2 + 729x + 729 D. 729x3 + 243x2 + 2,187x + 729 E. 729x3 + 2,187x2 + 2,187x + 729
Determine the probability using a probability tree.A bag contains 3 red and 6 yellow marbles. Two marbles are drawn without replacement. Determine the probability of picking two red marbles.
A. 
B. 
C. 
D. 
Two marbles are drawn without replacement from a box with 3 white, 2 green, 2 red, and 1 blue marble. Find the probability.One marble is white and one marble is blue.
A. 
B. 
C. 
D. 
Find all cube roots of the complex number. Leave answers in trigonometric form.125
A. 5 cis 90°, 5 cis 210°, 5 cis 330° B. 5 cis 0°, 5 cis 60°, 5 cis 120° C. 5 cis 45°, 5 cis 165°, 5 cis 325° D. 5 cis 0°, 5 cis 120°, 5 cis 240°