Chapter 0.7, Problem 4E

To determine

To find: The change in baby elephant's weightfrom 2 months to 14 months.

Answer to Problem 4E

The change in baby elephant's weight is 725 pounds

Explanation of Solution

Given:

  

Calculation:

The graph offers low resolution, so by some improvisation, now try to place position of graph on month 2 line, here, it is certainly above than middle point leaning heavily towards 400 line.

Thus, take it as more than 300 (middle point) and less than 400 which is 375.

So, weight of elephant at 2 months = 375 pounds

Similarly, try to estimate weight of elephant baby at 14 months. Here, it lies approximately, between 1000 and 1200 line.

Thus, weight here at 14 months = 1100 pounds.

  $\text{Change in weight = Weight at 14 months}-\text{weight at 2 months}=1100-375=725$

Hence, the change in baby elephant's weight is 725 pounds

As, for description, weight of baby have increased throughout period of 12 months. However, rate of increase is not constant. Initially in normal rate which is decreased by $8^{th}$ month. But this rate of increase of weight rises again at 10 months, after which it rises uniformly.

Conclusion:

Hence, the change in baby elephant's weight is 725 pounds