Solve the problem.The energy cost of a speed burst as a function of the body weight of a dolphin is given by 
where w is the weight of the dolphin (in kg) and E is the energy expenditure (in kcal/kg/km). Suppose that the weight of a 
dolphin is increasing at a rate of 11 kg/day. Find the rate at which the energy expenditure is changing with respect to time.
A. -0.001 kcal/kg/km/day
B. -24.9155 kcal/kg/km/day
C. -6.2171 kcal/kg/km/day
D. -0.0113 kcal/kg/km/day
Answer: D
Mathematics
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A. 
B. 
C. 
D. 
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Expand, where i2 = -1.
4
A. 1 B. -1 C. 1 - i D. 1 + i
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User row operations to change the matrix to reduced form.
A. 
B. 
C. 
D. 
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