Solve and check.
- 
= 
A. x = 
B. x = -12
C. x = -3
D. x = 12
Answer: D
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Provide an appropriate response. Add 35 kg. + 413 kg. + 63.5 kg. + 110 kg. and round to 3 significant digits:
A. 625 kg. B. 621 kg. C. 621.5 kg. D. 622 kg.
Find the sum without the use of a number line.(-3) + 4
A. -7 B. 1 C. -1 D. 7
Find the rule of a quadratic function whose graph has the given vertex and passes through the given point.vertex (5, -4); point (3, -24)
A. f(x) = -5(x + 5)2 - 4 B. f(x) = (x - 5)2 - 4 C. f(x) = 3(x - 5)2 - 4 D. f(x) = -5(x - 5)2 - 4
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