Suppose that a firm has only one variable input, labor, and firm output is zero when labor is zero. when the firm hires 6 workers the firm produces 90 units of output. fixed costs of production are $6 and the variable cost per unit of labor is $10. the marginal product of the seventh unit of labor is 4. given this information, what is the average variable cost of production when the firm hires 7 workers?
a; $12.67
b; $11
c; 81 cents
d; 75 cents

Beswick company your team is allocated a project involving a major client, the beswick company. although the organization has many clients, this client, and project, is the largest source of revenue and affects the work of several other teams in the organization. the project requires continuous involvement with the client, so any problems with the client are immediately felt by others in the organization. jamie, a member of your team, is the only person in the company with whom this client is willing to deal. it can be said that jamie has: