The CD format has been declining in popularity. A music executive used the equation LaTeX: f\left(x\right)=240,000\left(.95\right)^xf ( x ) = 240 , 000 ( .95 ) x to predict the future CD sales of a music company. If the company's starting sales are 240,000 CDs, how many years will it take until the company's sales are cut in half?
