Below is an instruction that describes a task. Write a response that appropriately completes the request in Swahili. Please answer in Swahili.

### Instruction:
Missy had a giant piggy bank in her bedroom.  Every day she would search the house for change to put in her bank.  After 4 years, the bank was opened and it contained $450 in change.  If the second, third, and fourth-year she doubled the amount of money she put in the bank from the amount she had put in the previous year, how much money, in dollars, did she put in the bank the first year?

### Response:
 Tuchukue x kuwa kiasi cha pesa alichoweka kwenye kibanda mwaka wa kwanza.
Hivyo, mwaka wa pili alikuwa 2*x, mwaka wa tatu alikuwa 2*2*x=4*x, na mwaka wa nne alikuwa 2*2*2*x=8*x.
Na kiasi jumla cha pesa kwenye kibanda ni x+2*x+4*x+8*x=$450.
Na, hivyo, tuna 15*x=$450.
Na, kwa hiyo, kiasi cha pesa alichoweka kwenye kibanda mwaka wa kwanza ni x=$30.