Rick and Morty have a joint checking account. Their balance at the beginning of October was $9,145.87. During the month they made deposits totaling $2,783.71, made debit card purchases
totaling $4,871.90, paid a maintenance fee of $12, and earned $11.15 in interest on the
account. What was the balance at the end of the month?

9514 1404 393

  $7056.83

Step-by-step explanation:

Deposits and interest are added to the balance. Withdrawals, purchases, and fees are subtracted from the balance. The end-of-month balance is ...

  $9145.87 +2793.71 -4871.90 -12.00 +11.15 = $7056.83

It seems its starts out increasing by 10 + 1. However each year it adds 1 more so for year three for example it would be 121 + 12 instead of 11 for the simple fact it increases +1 every year. So in conclusion for the rest of the trucks per year would increase by 10+ ? depending on which year. 

Year 3 +12 =133 
Year 4 +13 =146
Year 5 +14 =160
Year 6 +15 =175
Year 7 +16 =191
Year 8 +17 =208
Year 9 +18 =226

And so on. :)