In order to calculate the depreciation using the double declining balance method you must first calculate the amount of depreciate using the straight line method. After you calculate it by the straight line method, you simply need to double it for this this problem. 
The original price is $20,000, and then subtract the $2,000 estimated trade in value and the answer is $18,000. This is the amount that you need to depreciate. 
Straight line method: $18,000 divided by the 5 year useful life = $3,600 per year.
Double declining balance = $3,600 x2 = $7,200 per year depreciation.
Year Depreciation Amount 
1 7,200
2 7,200
3. 3,600
 
        
             
        
        
        
Answer: Partial ownership of the company
        
                    
             
        
        
        
Answer:
The correct answer is letter "D": consumer surplus that is generated from the introduction of a new product.
Explanation:
Externalities are defined as the effects passed on third parties as a result of the actions of another individual or organization even if the third party has nothing to do with the operations of the individuals or entities. Externalities can be positive or negative.
The product-variety externality is an example of a positive externality. The product-variety externality takes place when a new product is introduced in the market generating a consumer surplus. Thus, end-users benefit from the variety of products available in the market even if that represents more competition for companies.
 
        
             
        
        
        
Answer:
Explanation:
31% mark up based on cost
$100 * 1.31 = $131
Same mark up based on selling price
$131 - $100 = $31
Therefore, our percent mark up if selling price were the base; =$31/$131 * 100 = 23.66%
 
        
             
        
        
        
I believe its true but you should probably get a 2nd opinion