The answer for this equation is A
In three years the Marlin's truck is worth 13,440$
To find percentage of a number, multiple it with in 0. Of the number.
Example: 28,000 ×. 48
That equals 13,440
So 48% of 28,000 is 13,440
Your question is not stated clearly but I think you are asking to find the sqrt{b} when 81 is the b.