The energy expenditure (in kcal/km) for animals swimming at the surface of the water is given by y = f(x) = 0.01x0'88, where x is the animal's weight in grams. a. Find the energy for the following animals swimming at the surface of the water. i. A muskrat weighing 600 9 ii. Asea otter weighing 50,000 g b. Suppose the animal's weight is given in kilograms rather than grams. Given that 1 kg = 1000 9, find a function x= g(z) giving the animal's weight in grams if z is the animal's weight in kilograms. c. Write the energy expenditure as a function of the weight in kilograms in the form y = azb by calculating f(g(z)). i. The energy fora muskrat is 2.8 kcal/km. (Round to the nearest tenth as needed.) ii. The energy of a sea otter is 136.5 kcal/km. (Round to the nearest tenth as needed.) b. Afunction giving the animal's weight in grams is X =D. (Type an expression using 2 as the variable.)