World oil consumption can be estimated to be approximately 74.845 million barrels per day in 1998 and to be increasing at approximately 0.3 percent per year. Let $c_n$ be the daily world oil consumption (in millions of barrels per day) $n$ years after 1998.

A. Find a formula for $c_n$: $c_n$ =

B. Find $c_n - c_{n-1}$: $c_n - c_{n-1}$ =
(Be sure that you can interpret what this difference means in practical terms.)