Suppose that $\ u=\log{(2)} \ $ and $\ v=\log{(5)}$. Find possible formulas for the following expressions in terms of $u$ and/or $v$. Your answers should NOT involve any $\log{ \ }$'s.
 
a) $\log{(0.4)} =$

b) $\log{(12.5)} =$

c) $\log{(80)} =$