You need to give options for future reference
(a) You can plant 7 1/4 acres per pound of seed
(b) Isabel takes 7 minutes to run a mile
Answer:

Step-by-step explanation:
Salvage value=$1000
Purchased value=$11,000
In order to find the balance in accumulated depreciation at december 31,2015 using the units of activity we will use the following formula:

In the above equation $10000 came from Purchased value - salvage Value
Answer:
c
Step-by-step explanation: