#### Answer

a. $W=567+15x$
b. year $2021$

#### Work Step by Step

a. Based on the given information, we can write the equation as $W=567+15x$, where $x$ is the number of years after 2000.
b. Letting $W=882$, we have $567+15x=882$, which gives $x=21$ and corresponds to year $2021$.