The equation of an ellipse is given. Put the equation in standard form and sketch the ellipse.9x2 + 49y2 = 441
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Answer: C
Mathematics
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Find a quadratic function that best fits the data. Give answers to the nearest hundredth.
A. y = 1.40x2 + 27.15x + 14.44 B. y = -1.40x2 + 27.15x - 14.44 C. y = 5.66x2 - 39.888x + 99.29 D. y = -0.03 + 3.78x - 6.74
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Perform the indicated operation. Give the answer in lowest terms.
? 
A. 
B. 
C. 20z
D. 
Mathematics
Use a calculator to find the natural logarithm correct to four decimal places.ln (2.93 ? 102)
A. 2.1500 B. 1.0750 C. 1.7681 D. 5.6802
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Use an equation to solve the problem.Sales tax on a $11 compact disc is $0.55. At what rate is sales tax computed?
A. 9% B. 5% C. 4% D. 8% E. 6%
Mathematics