Final answer:
The rate of growth for the black bear is calculated by subtracting its weight at birth from its weight after sixty days, and then dividing by sixty. The calculated growth rate is 0.104 kg per day.
Step-by-step explanation:
To find the rate of growth of the black bear in kilograms per day, we need to calculate the difference in weight from birth to the weight after sixty days, and then divide that by the number of days.
Firstly, the weight of the bear at birth was 0.3 kg and after sixty days it was 6.54 kg. Thus, the overall weight gain was 6.54 kg - 0.3 kg = 6.24 kg. Since this weight gain happened over a period of sixty days, we then divide the weight gain by the number of days to find the daily growth rate.
The rate of growth is calculated as:
6.24 kg / 60 days = 0.104 kg per day
When rounded to the nearest thousandth of a kilogram, the growth rate is 0.104 kg per day.