The following tables give the capital expenditures and gross operating costs of manufacturing establishments for pollution abatement,

Question:

The following tables give the capital expenditures and gross operating costs of manufacturing establishments for pollution abatement, in millions of dollars.
(a) Use a calculator or spreadsheet to find the sum of the matrices containing these data. This will yield the total costs of manufacturing establishments for air, water, and solid contained waste pollution abatement for the years 2013-2016.
(b) Which type of pollution abatement was most expensive in 2016?
Pollution Abatement Capital Expenditures