Jesse buys his coworkers lunch from the local steakhouse. The food cost $105 point $.79 and the sales tax rate is 9%. Jesse wants to leave a 20% tip based on the pretax amount. How much will the total be including tax and tip.
The pretax amount is $105.
There will be $105 * 0.09 = $<<105*0.09=9.45>>9.45 in sales tax.
The tip amount will be $105 * 0.20 = $<<105*0.20=21>>21.
The total amount will be $105 + $9.45 + $21 = $<<105+9.45+21=135.45>>135.45. Answer: \boxed{135.45}.