How much does it cost every hour when I turn on my air condition?

I can't find anything online well here is some info about my a/c.

115v~ 60Hz 1PH
Cooling Capacity - 7800 btu/h
Uses 15 Amp Time Delay Fuse Circuit Breaker
Please help becuz i cant stand heat and my parents say its too expensive fur the bill and we use the gay fan... +(
Update: I live in Rosemead, CA
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