Answer: 1. Special order price, direct materials, direct labor, and variable overhead.
2. Increases by $10,000,000
Explanation:
1. What are the relevant costs and benefits of the two alternatives (accept or reject the special order)
These include special order price, direct materials, direct labor, and variable overhead.
2. By how much will operating income increase or decrease if the order is accepted?
This will be:
= Units × (special order price-variable costs)
= 5000 × ($18000 - $10000 - $2000 - $4000)
= 5000 × $2000
=$10,000,000
Therefore, it increases by $10,000,000
