Find all cube roots of the complex number. Leave answers in trigonometric form.2 + 2i
A. 
cis 20°, 
cis 140°, 
cis 260°
B. 
cis 20°, 
cis 140°, 
cis 260°
C. 
cis 30°, 
cis 150°, 
cis 270°
D. 
cis 20°, 
cis 140°, 
cis 260°
Answer: D
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Find y".y = 2x5(2x - 8)2
A. 336x5 - 1920x4 + 2560x3 B. 48x6 - 384x5 + 640x4 C. 8x6 - 64x5 + 10x4 D. 88x5 - 640x4 + 40x3
Solve the problem.The value of a particular investment follows a pattern of exponential growth. In the year 2000, you invested money in a money market account. The value of your investment t years after 2000 is given by the exponential growth model A = 6400e0.053t. When will the account be worth $8796?
A. 2006 B. 2008 C. 2005 D. 2007
Write the partial fraction decomposition of the rational expression.
A. 
+ 
+ 
B. 
+ 
+ 
C. 
+ 
+ 
D. 
+ 
+ 
Use front-end rounding to estimate the difference:
?
?
A. 42,000 B. 52,000 C. 53,000 D. 43,000