Solve the problem.Find the amount of time required for a $26,000 investment to double if the annual interest rate r is 3.8% and interest is compounded continuously. Round your answer to the nearest hundredth of a year.
A. 285.76 years
B. 267.52 years
C. 2.68 years
D. 18.24 years
Answer: D
Mathematics
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A. 
B. 
C. 
D. 
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Solve the problem. Round to two decimal places if needed.A sector of a circle has an area of 96 square feet. Find the central angle (in degrees) that forms the sector if the radius is 9 feet.
A. 67.94° B. 222,878.98° C. 135.88° D. 445,757.96°
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Find a unit vector in the direction of the given vector.
A. 
B. 
C. 
D. 
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Use even and odd properties of the trigonometric functions to find the exact value of the expression.sec (-?)
A. 0 B. undefined C. -1 D. 1
Mathematics