Answer:
Understatement of net income before taxes by $9,000 and $1,700 by both errors.
Step-by-step explanation:
For inventory account, its movement is denoted as;
Opening balance + purchases/production - cost of goods sold = closing inventory
The value of $9,000 means an understatement of closing inventory whereas same value overstates the cost of goods sold. The final outcome is that same value of $9,000 would reduce or understate net income balance.
Also, where an expense is overstated, such would understate the net income balance. With regards to the overstatement of depreciation by $1,700, the net income will be affected(understated) by same amount.