Factor completely.4a3 - 81a
A. a(4a + 1)(a - 81)
B. a(2a + 9)(2a - 9)
C. a(2a - 9)2
D. (2a2 + 9)(2a - 9)
Answer: B
Mathematics
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Write the polynomial in standard form.
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A. 
B. 
C. 
D. 
E. 
Mathematics
Find the product.(2m - 9w)(2m + 9w)
A. 2m2 - 9w2 B. 4m2 + 36mw - 81w2 C. 4m2 - 81w2 D. 4m2 - 36mw - 81w2
Mathematics
Solve the problem.Find out how long it takes a $2800 investment to double if it is invested at 
compounded semiannually. Round to the nearest tenth of a year. Use the formula 
.
A. 7.9 years B. 8.3 years C. 8.1 years D. 7.7 years
Mathematics
Find the vertex, the focus, and the directrix of the parabola.(y - 1)2 = 12(x - 2)
A. V: (2, 1); F: (5, 1) ; D: x = -1 B. V: (2, 1); F: (-1, 1); D: x = 5 C. V: (-2, -1); F: (1, -1); D: x = -5 D. V: (1, 2); F: (4, 2); D: x = -2
Mathematics