Solve the equation by factoring.x2 - 7x - 18 = 0
A. {-2, 9}
B. {-2, -9}
C. {2, 9}
D. {2, -9}
Answer: A
Mathematics
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Provide an appropriate response.The total sales x ( in hundred thousands) for a music CD t months after the CD is released can be approximated by x = 
. Use logarithmic differentiation to find 
.
What will be an ideal response?
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Use front end rounding to estimate the answer. Then use your estimate to select the correct exact answer.7.2 - 0.04
A. 71.6 B. 0.716 C. 7.16
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Simplify using scientific notation. Express the answer in standard notation.
A. .07 B. 7 C. .007 D. 70
Mathematics