You can put this solution on YOUR website! = = = =
Moreover,I'll post an answer of another question in order to explain you more about exponential numbers..
Observe..
If 7^-x= 1/4, what does 49x equal?
and you want to solve where we can write it as and also as and also as
If you give a name to as "a"
We'll have
If >> so equals to
RF.