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 10 kg/day. Find the rate at which the energy expenditure is changing with respect to time.

A. -0.012 kcal/kg/km/day
B. -23.5083 kcal/kg/km/day
C. -5.9903 kcal/kg/km/day
D. -0.0012 kcal/kg/km/day

Answer: A

Mathematics

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Write the expression in simplest form. If a radical appears in the denominator, rationalize the denominator.

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B. 75x
C. 5x
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Graph. -  = 1

A.

B.

C.

D.

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