Hello,Originally Posted by kbryant05
I hope that you are allowed to use the ln-button too.
Plug in the value(s) you know into the equation:
That means you have to solve the equation for x:
The next steps should be:
The exponent x/30 is a logarithm to the base 0.5. Use the base-change-formula (I am not sure, if this is the right expression. But maybe you recognize the name when you have a look at the solution)
. That means x is round about 110 years. In 2066 Chernobyl will be one of the most dangerous places on earth.