Night Shades Inc. (NSI) manufactures biotech sunglasses. The variable materials cost is $1.66 per unit, and the variable labor cost is $2.82 per unit.

a. What is the variable cost per unit?

b. Suppose the company incurs fixed costs of $410,000 during a year in which total production is 225,500 units. What are the total costs for the year?

c. If the selling price is $10.45 per unit, what is the NSI break-even on a cash basis?

d. If depreciation is $124,025 per year, what is the accounting break-even point?