Multiply.-9(-3)(-3)
A. 19
B. 81
C. -81
D. -91
Answer: C
Mathematics
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Find the standard-form equation of the ellipse centered at the origin and satisfying the given conditions.An ellipse having a focus at (0, -2
) and directrix y = - 
.
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
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Solve.Jude bought a CD set consisting of a compilation of hits from the 1990s. The CD set cost $34.99 plus $2.97 sales tax. She paid for it with a $100 bill. How much change did she receive?
A. $62.04 B. $65.01 C. $63.04 D. $61.96
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Sketch the graph of the parabola.y = x2 - 2x - 8
A. 
B. 
C. 
D. 
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Find the indicated vector.Let a = 3i, b = i + j. Find 3a + b.
A. 
B. 
C. 
D. 
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