What is not true about the profit business model?

The choices can be found elsewhere and as follows:

a.) The revenue is always more than the cost. 
b.) Ideally, the cost will be less than the revenue. 
c.) The profit function can be represented by P(x)= R(x)-C(x).

I think the correct answer is option A. The revenue is always more than the cost is not a true statement. It does not necessarily always have to be in such way. Hope this answers the question.

I believe the answer is: A) more investors are willing to take risks.

As the economy grows people would have more income and their standard of living tend to be elevated.

When this happen, the opportunities for companies to thrive would increased since they have more potential customers. This make more inventors willing to take risks.