Factor the sum or difference of two cubes.729y3 - 1
A. (9y + 1)(81y2 - 9y + 1)
B. (9y - 1)(81y2 + 9y + 1)
C. (9y - 1)(81y2 + 1)
D. (729y - 1)(y2 + 9y + 1)
Answer: B
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Solve the problem.There are 6 women running in a race. If a person guesses randomly the first place, second place, and third place winners, what is the probability that they will guess all winners correctly?
A. 
B. 
C. 
D. 
Express the number in terms of i.
A. -6i
B. 6i
C. i
D. ±6
Solve the problem.A rock falls from a tower that is 58.8 m high. As it is falling, its height is given by the formula 
with t in seconds. How many seconds will it take for the rock to hit the ground (h = 0)?
A. 7.7 sec B. 7.3 sec C. 705.6 sec D. 3.5 sec
Solve the problem, using simple interest. Round your answer, as needed.Annie's cafe borrows $9100 at 10% for 130 days. Find the total amount that must be repaid after 130 days.
A. $12,341.10 B. $9428.61 C. $9132.41 D. $10,010.00