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°
Answer: D
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Solve the problem.Find k such that the line -kx + 5y = 4 is parallel to the line through (5, -8) and (2, 4).
A. k = -19.5 B. k = -19 C. k = -22 D. k = -20
Solve the problem.An object will take t seconds to drop d ft, where t = 
. How much time will it take the object to drop 20 ft?
A. 2 
sec
B. 
sec
C. 
sec
D. 
sec
Solve the problem.A grain dealer sold to one customer 4 bushels of wheat, 5 of corn, and 3 of rye, for $23.10; to another, 5 of wheat, 3 of corn, and 4 of rye, for $25.30; and to a third, 3 of wheat, 4 of corn, and 5 of rye, for $28.40. What was the price per bushel for corn?
A. $3.90 B. $1.60 C. $1.40 D. $1.10
Evaluate the sum.
A. 12,182,900 B. 19,142,900 C. 9,862,900 D. 16,822,900