A valve on a storage tank is opened for 4 hours to release a chemical in a manufacturing process. The flow rate R (in liters per hour) at time t (in hours) is given by the exponential model 
. Use the definite integral to approximate the number of liters of chemical released during the first 4 hours. Round your answer to two decimal places.
?
A. 94,574.44 liters
B. 81,278.57 liters
C. 100,897.01 liters
D. 98,626.28 liters
E. 87,076.17 liters
Answer: A
Mathematics
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A. 
B. 
C. 
D. 
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Express the given function as a composite of functions f and g such that y = f(g(x)).y = (-2x - 17)2
A. f(x) = x2, g(x) = -2x - 17 B. f(x) = (-2x)2, g(x) = -17 C. f(x) = -2x - 17, g(x) = x2 D. f(x) = -2x2, g(x) = x - 17
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- 9
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Convert the units using unit fractions.390 sec = 
min
A. 6
B. 23,400
C. 6
D. 3900
Mathematics