Radioactive decay: A physicist has found the following linear model for the natural logarithm of the amount of a radioactive substance present over time: ln A = −0.073t + 2.336 . Here t is time in...

Radioactive decay: A physicist has found the following linear model for the natural logarithm of the amount of a radioactive substance present over time:

ln A = −0.073t + 2.336 .

Here t is time in minutes and A is the amount in grams. Find an exponential model for the amount.