Factor out the GCF from the polynomial. If the GCF is 1, write prime.16x4 - 48x3
A. 48
B. prime
C. 16x
D. 16x3(x - 3)
Answer: D
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Provide an appropriate response. A small office manager wants to buy new cordless phones for each of the office's 11 desks. Each phone costs $89.99. Estimate the total cost by using numbers with one nonzero digit. Find the exact amount.
A. $900; $898.98 B. $900; $989.89 C. $800; $989.89 D. $800; $989.99
Find the center, foci, and vertices of the ellipse.64x2 + 16y2 = 1024
A. center at (0, 0)
foci at (0, - 4
) and (0, 4
)
vertices at (0, -8), (0, 8)
B. center at (0, 0)
foci at (0, 8) and (4, 0)
vertices at (0, 64) and (16, 0)
C. center at (0, 0)
foci at (0, -8) and (0, 8)
vertices at (0, -64), (0, 64)
D. center at (0, 0)
foci at (- 4
, 0) and (4
, 0)
vertices at (-8, 0), (8, 0)
Use a double-angle identity to find the exact value of the expression.2 cos2 22.5° - 1
A. 
B. 
C. 
D. 
Find the value of the determinant.
A. 252 B. 41 C. -36 D. 36