Multiply.(a - b)(a2 - ab - 3b2)
A. a3 - 2a2b - 3ab2 + 3b3
B. a3 - 2a2b + 3b3
C. a3 - 2a2b - 2ab2 + 3b3
D. a3 - 2a2b - 4ab2 - 3b3
Answer: C
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The number N, measured in millions of students, enrolled in high school t years after 1965 is given approximately by
?
.
According to this model, in what year (as a date) did high school enroll reach a maximum, and what was the maximum enrollment? Round your answers to two decimal places.
?
A. The maximum enrollment of 13.68 million occurred in 1977. B. The maximum enrollment of 12.00 million occurred in 1981.00. C. The maximum enrollment of 13.44 million occurred in 1984. D. There is no maximum value.
Use a graphical method to solve the system. Give x- and y-coordinates correct to the nearest hundredth.y = sin 
y = x2 - 2
A. x = 1.65, y = 0.74 or x = -1.20, y = -0.56 B. x = 1.65, y = 0.74 C. x = 1.65, y = 0.74 or x = -1.65, y = -0.74 D. x = -1.20, y = -0.56
Find the probability.A committee of 9 members is voting on a proposal. Each member casts a yea or nay vote. On a random voting basis, what is the probability that the final vote count is unanimous?
A. 
B. 
C. 
D. 
Solve the inequality. Express the answer in interval notation.
x + 1 ? 
x - 1
A. (-?, 
B. (-?, 
C. 
, ?)
D. 
, ?)