2 pts Question 11 Under the allowance method, the actual write-off of an uncollectible account will have what effect on the accounting equation? Total assets, liabilities and equity remain unchanged. Total assets decrease and equity decreases. Liabilities increase and equity decreases. Total assets increase and equity decreases. 2 pts Question 15 At the end of the third year of its six-year life, a piece of equipment on the balance sheet of ABC Company has a net book value of $18,000. On January 1 of Year 4. ABC incurs $2,500 of ordinary repair and maintenance costs and also makes $3,000 of improvements to the equipment. The $3,000 improvement extends the life of the equipment by two years. What is the net book value of the equipment on January 1 of Year 4 immediately after ABC records the $2,500 and the $3,000 expenditures? O $20.500 O $18,000 $23.500 $21,000