Subtract 2 from both sides:
Divide both sides by 2:
Take the natural log of both sides:
Recall this law of logarithms:
Apply it:
The natural log of e is 1, so we have:
Divide both sides by 7;
For problem 1 rearrange your equation so that your exponentiated factor ( ) is by itself (no coefficient) then treat each side of the equation like a variable and plug each into the inverse of . (hint: You should be using the fact that .)
For problem 2 observe that and as an immediate consequence . Also note that