Find the domain of the function.f(x) = 3 - ln(9x)
A. (0, ?)
B. (-?, 3) ? (9, ?)
C. (9, ?)
D. (-3, 9)
Answer: A
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Using Green's Theorem, compute the counterclockwise circulation of F around the closed curve C.F = xyi + xj; C is the triangle with vertices at (0, 0), (5, 0), and (0, 4)
A. 
B. 0
C. 
D. - 
Find the next term of the sequence. ? 27, 64, 125, 216, ... ?
A. 2,401 B. 392 C. 354 D. 343 E. none of these
Find k such that the function is a probability density function over the given interval. Then write the probability density function.f(x) = k(16 - x); [0, 16]
A. 
; f(x) = 
(16 - x)
B. 256; f(x) = 256(16 - x)
C. 16; f(x) = 16(16 - x)
D. 
; f(x) = 
(16 - x)
Solve the problem.The intensity of a radio signal from a radio station varies inversely as the square of the distance from the station. If the intensity is 8000 units at a distance of 2 miles, what will it be at a distance of 5 miles?
A. 1244 units B. 1306 units C. 1280 units D. 1263 units