Jesse buys his coworkers lunch from the local steakhouse. The food cost $105.79 in the sales tax rate is 9%. Jesse wants to leave a 20% tip based on the pre-tax amount how much will the total be including tax and tip.

Answer 1

The sales tax amount is $105.79 * 9% = $<<105.79*9*.01=9.522099999999999>>9.52.
The pre-tax amount is $105.79 - $9.52 = $<<105.79-9.52=96.27>>96.27.
The tip amount is $96.27 * 20% = $<<96.27*20*.01=19.254>>19.254.
The total amount is $105.79 + $9.52 + $19.254 = $<<105.79+9.52+19.254=134.56400000000002>>134.56. Answer: \boxed{134.56}.