Provide an appropriate response.When a certain integer is multiplied by -9, the result is -720. What is that integer?
A. - 
B. 80
C. 
D. -80
Answer: B
Mathematics
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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 
Mathematics
Perform the indicated operation without the use of a calculator and express each answer in decimal notation.
A. 0.00142857 B. 700 C. 100 D. 0.07
Mathematics
Perform the requested operation on the given function.f(x) = 7x - 8, g(x) = 4x - 4Find (g - f)(x).
A. -3x + 4 B. -3x - 12 C. 3x - 4 D. 3x - 12
Mathematics
Subtract.(2x2y + 2xy) - (4x2y + 8xy2 + 6xy)
A. -2x2y - 8xy2 + 8xy B. -2x2y + 8xy2 - 4xy C. 4x2y + 2xy2 - 4xy D. -2x2y - 8xy2 - 4xy
Mathematics