Sorry, I already asked a question today, but it would be awesome if someone could help me with this one, I feel like I'm close:

The annual profit Y(in $100,000) can be expressed as a continuous function of drug demand x(in 1,000): Y(x) = 2(1-e^(-2x)). Suppose the demand for their drug has the probability function: f(x)= 6e^(-6x), x>0. Find the company's expected annual profit.

So do I have to start by doing ? I'm sure I have the upper bound wrong...