I am pretty sure that it would be 13m + 8. All you have to do is combine the like terms.
1225.
It is also called 35 squared. It is 35X35
The power is how many times you multiply the number by itself.
Current value of the boat = $45000
Rate at which the value decrease = 8.5%
Value decreased after 1 year = 
Hence, value becomes = 
Value decreased after 2nd year =

Hence, value becomes = 
Value decreased after 3 year =

Hence, value becomes = 
So, value of the boat after 3 years becomes $34472.74