(a)
To find: The upper and lower estimate.
(a)
Answer to Problem 31E
Upper estimate:
Lower estimate:
Explanation of Solution
Given information:
The table is:
Calculation:
Because the pace at which pollutants are released is growing, an upper estimate of the total tonnage of pollutants is provided using data from the end of each month.
Upper estimate:
Because the pace at which pollutants are released is growing, a lower estimate of the total tonnage of pollutants is produced using data from the previous month's end. Although don't have any data for the first of January, know that pollutants were emitted at a rate of
Lower estimate:
Therefore the required upper estimate:
Lower estimate:
(b)
To find: The time when a total of
(b)
Answer to Problem 31E
Explanation of Solution
Given information:
The table is:
Calculation:
To use the left rectangles, the amount of pollutants discharged by the end of October is:
Therefore the required by the end of October, a total of
Chapter 5 Solutions
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