<h2>
Answer:</h2>
<u>The expression is</u><u> 5(40+80)</u>
<h2>
Step-by-step explanation:</h2>
The sum of 40 and 80 can be written as
(40+80)
and when we take the 5 times of the sum
we can write as
5(40+80)
The meaning of y in this equation is the commission I think. Sorry if I’m wrong
C + 3a= 7
C-C+3a= 7-C
3a= 7-C
3a/3= (7-C)/3
a= (7-C)/3
$25,000 - 5,000 = $20,000
Since the useful life is 10 years or 10% per year, double-declining rate would be 20%
Year 1
$20,000 x .2 = $4000
Book Value = $16,000
Year 2
$16,000 x .2 = $3,200
Book Value = ($16,000-3,200) =$12,800