Alternative energy sources because of the increasingly

Question

Question: ALTERNATIVE ENERGY SOURCES Because of the increasingly important role played by coal as a viable alternative energy source, the production of coal has been growing at the rate of

3.5e^0.05t

Billion metric tons/year, t yr from 1980 (which corresponds to t = 0). Had it not been for the energy crisis, the rate of production of coal since 1980 might have been only

3.5e^0.01t

Billion metric tons/year, t yr from 1980 .Determine how much additional coal was produced between 1980 and the end of the century as an alternate energy source.