Widgets Production Function

A factory produces a certain number of widgets each hour. The number of widgets produced after $h$ hours is given by the expression $W = 3h^2 + 2h$, where $W$ is the total number of widgets produced. If the factory operates for a total of $x$ hours, how many widgets does it produce when $x = 5$ hours?

Calculate $W$ and then determine which of the following equations correctly represents the total number of widgets produced in terms of $x$.