Yellow, Inc., sells a single product for $10. Variable costs are $4 per unit and fixed costs total $120,000 at a volume level of 10,000 units. What dollar sales level would Yellow have to achieve to earn a target net profit of $240,000?

a. $400,000.
b. $500,000.
c. $600,000.
d. $750,000.
e. $900,000.

In a market economy, supply and demand are important because theya. (i) play a critical role in the allocation of the economy's scarce resources.b. (ii) determine how much of each good gets produced.c. (iii) can be used to predict the impact on the economy of various events and policies.d. all of (i), (ii), and (iii) are correct.