The release of fluorocarbons used in household sprays destroys the ozone layer in the upper atmosphere. suppose the amount of ozone is given by , 0025 . 0 0 t e m m − = where t is measured in years. how long will it take for 70% of the ozone to disappear, rounded to the nearest year?

for e2020. the answer would be some directions from the mountain range so we can find mt. whitney. to locate which direction is north, you should use a   compass. this would not only find mt. whitney, but also becuase of this long paragraph you would get points because it's not like anyone actually reads your work becuase once they read the first sentence it sounds dumb enough to not read becuase i'm not good at answering this but the answer is compass for your benefit.

for e2020 ; -;

's the question?