Coal gas is produced at a gasworks Pollutants in the gas are

Last updated: 6/2/2023

Coal gas is produced at a gasworks Pollutants in the gas are removed by scrubbers which become less and less efficient as time goes on The following table gives R t the number of kilograms of pollutant per month captured by the scrubbers Let t be the number of months since the scrubbers were installed t R t Estimate 36 37 95 33 95 35 95 1 15 8 4 1 5 14 6 2 13 2 2 5 12 1 3 10 9 3 5 9 3 R t dt using a Trapezoidal rule with 6 intervals 4 7 8