If i make $13 an hour how much taxes will be taken out of my paycheck?

-im trying to get a nurse assistant job in vermont making 13 an hour and working 40 hours a week. im also trying to get my own apartment so i was wondering how much money will be taken out of my paycheck for taxes? i need to know so i can figure out how much rent i can afford thanks for any help :)I use this weird formula I came up with that is amazingly accurate. For a 40 hour work week you times the amount you get paid by 9 and minus that from the total you would be paid so : 9*13 = 117 and subtract from 13*40 which is 520 = $403 and that is take home with social security medicare, unemployment, state tax, and federal tax taken out.
In Vermont, you can expect to pay 17% in State taxes and another 14% in federal. Factor in social security, FICA, etc and your total tax would be between 43 and 45% depending if you work overtime or not. So to be on the safe side, consider your take home pay $7.50 a hour. ($300 a week). Hope that helps
you know that 5.65% will be withheld for FICA, possibly 1% or more for a state employee tax,

the income tax will depend on how you filed your W-4 with your employer, your gross, your status and the frequency of the payrolls
Around $100 deducted a week if you have single/1 allowance on your W-4
$130 p/week