Simplify.
A. 
B. 
C. 
D. 
Answer: A
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Find the value of the constant k so that the given function in a probability density function for a random variable over the specified interval. f(x) = kex over [0, 9]
A. 
B. 
C. e9 - 1
D. 
Solve the problem.A sensor light installed on the edge of a home can detect motion for a distance of 
in front and with a range of motion of 
Over what area will the sensor detect motion and become illuminated? Round your answer to two decimal places.
A. 12,468.98 ft2 B. 12,469.08 ft2 C. 6234.39 ft2 D. 6234.49 ft2
Find the amplitude or period as requested.Find the amplitude of y = -4 sin 
+ 3.
A. -12
B. 
C. 4
D. 3
Use a calculator to help solve the equation. Round approximate answers to three places.-69.178x = -647.306
A. {0.107} B. {44,779.334} C. {-578.128} D. {9.357}