Is 30 dollar/9 hours for 2 boys as a baby sitter job, okey ?

I just start working as a baby sitter, he charge me 30/9 hours for 6 and 10 years old boys. from 2:30 until 11:30pm, this is my first day and i already have a hard time. I can't sleep all night coz i am thinking it's just to hard for me coz i need to drive all away to there house and when i came back i need to do my job as a wife and a mother for my 8 mth baby which is cooking and prepare for my husband lunch box ??? i am sooo tried.