Answer:
t-5=12
Step-by-step explanation:
Answer: 8 2/5
21/4 divided by 5/8 = 21/4 x 8/5 = 8 2/5
Answer:

Step-by-step explanation:

hope this helps
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Ok, so the key says 1cm=10mm. So you do 25x10=250cm, then do 250(the fish)-25(the guinea pig)= 225cm
we can use formula

now, we can find a and b
Initially , price is 500
so,
At 


now, we can plug back

At 
we can use it and find b

now, we can solve for b
and we get

so,
annual depreciation rate is 27.144%.......Answer