Frontier specializes in developing online training for its clients, Most of its costs are fixed but some have unusual cost behaviour patterns. It's happening due to intense competition from other companies providing a similar service, frontier pays its sales staff a fixed salary of $80,000 plus sales commissions using the following scheme: Frontier has grown rapidly over the past there years, with similar growth in the number of new clients expected for the next few years. As a result of the growth, Frontier customer support department is struggling to keep up with request from customers for technical support. The two customer support employees are both paid an annual salary of $75,000 and are paid $60 per hour for timed work in excess of 35 standard hours per week. In the most recent annual period the two customer service employees worked a combined total of 1,000 overtime hours. Management believes this is the maximum number of over time hours the two employees can Frontier has grown rapidly over the past there years, with similar growth in the number of new clients expected for the next few years. As a result of the growth, Frontier customer support department is strugeling to keep up with request from customers for technical support. The two customer support employees are both paid an annual salary of $75,000 and are paid $60 per hour for timed work in excess of 35 standard hours per week. In the most recent annual period the two customer service employees worked a combined total of 1,000 overtime hours. Management believes this is the maximum number of over time hours the two employees can cope with and is considering hiring a third full-time staff member for the customer service department at a starting salary of $70,000 per year. Required: 1. In terms of cost behaviour, what type of cost do sales staff wages represent? Be specific as possible in your answer. 2. Estimate total wages for a salesperson who generates $210,000 in sales for a vear. 3. Discuss any potential negative behavioral consequences among sales staff that the sales commission structure used by frentier might induce. 4. In terms of cost behaviour, what type of cost do customer support staff wages represent? Be specific as possible in your