Lima Audio Systems has 10 sales representatives, each earning a salary of $30,000 per year plus a commission of $5 per speaker sold. Last year, 100,000 speakers were sold.

1. Develop a cost equation for total selling cost.

2. Compute the total variable selling cost last year.

3. Compute the total selling cost last year.

4. Compute the unit selling cost for last year.

5. What if 110,000 speakers had been sold last year?

What would be the total selling cost?

What would be the unit selling cost?