Healthcare workers use it often to Treat diseases
18.95x0.75=14.2125
18.95-14.2125=4.73
You will pay $4.73
Should be zero, I believe.
Take the logarithm of both sides. The base of the logarithm doesn't matter.


Drop the exponents:

Expand the right side:

Move the terms containing <em>x</em> to the left side and factor out <em>x</em> :


Solve for <em>x</em> by dividing boths ides by 5 log(4) - log(3) :

You can stop there, or continue simplifying the solution by using properties of logarithms:



You can condense the solution further using the change-of-base identity,

The money multiplier is 1/ 0.12