There is one positive solution of 
. Find it. Round your answer to two decimal places if necessary.
?
A. 0.42
B. 1.73
C. 3.67
D. -4
Answer: B
Mathematics
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Is the function graphed below one-to-one?
A. Yes B. No
Mathematics
Find the derivative of the function.r = (sec ? + tan ?)-2
A. -2(sec ? + tan ?)-3
B. 
C. -2(sec ? tan ? + sec2?)-3
D. -2(sec ? + tan ?)-3(tan2 ? + sec ? tan ?)
Mathematics
Solve the problem.Find the height of the cliff. Round to the nearest hundredth of a meter when appropriate. 
A. 28.57 m B. 30.11 m C. 12 m D. 48.83 m
Mathematics
Find the standard-form equation for an ellipse which satisfies the given conditions.An ellipse centered at the origin having vertex at (0, -9) and eccentricity equal to 
A. 
+ 
= 1
B. 
+ 
= 1
C. 
- 
= 1
D. 
- 
= 1
Mathematics