An article on noise pollution states that noise intensity levels in large cities grow at the rate of 1 dB per year a) To what percentage of increase in intensity does this decibel rise rate correspond?

b) In how many years will there be noise intensity duplication if the rate of 1dB per year is maintained?

You are a sales representative for a company that makes a new alternate fuel for vehicles. you have prepared a presentation for the environmental engineers to sell your new product. what question do you expect the audience to ask regarding whether the new fuel will cause less damage to the environment? a. do we have to change any parts of the vehicle to use this alternate fuel? b. will the vehicles get better fuel mileage with the alternate fuel? c. how much greenhouse gas does your fuel produce compared with current fuel sources? d. is the alternate fuel more expensive than fossil fuel?