Solve the problem by integration.Under specified conditions, the time t (in min) required to form x grams of a substance during a chemical reaction is given by 
Find the equation relating t and x if x = 0 g when 
A. t = 
ln 
- 
ln 
B. t = 
ln 
+ 
ln 
C. t = 
ln 
- 
ln 
D. t = 
ln 
+ 
ln 
Answer: C
Mathematics
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A. -28 ln 3 B. -14 ln 3 C. 28 ln 3 D. 14 ln 3
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Use the order of operations to find the value of the expression.2(-4)2 - 3(-2)2
A. -4 B. 116 C. 20 D. 28
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Find the area of the specified region.Inside the circle r = 1 and to the right of the line r = 
sec ?
A. 
(2? + 3
)
B. 
?
C. 
(4? - 3
)
D. 
(2? - 3
)
Mathematics