Jesse buys his coworkers lunch from the local steakhouse. The food costs $105.79, and 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?
The sales tax on the food will be 105.79 * 0.09 = $<<105.79*0.09=9.53>>9.53.
So the total before the tip is 105.79 + 9.53 = $<<105.79+9.53=115.32>>115.32.
Based on the pre-tax amount, the tip will be 115.32 * 0.20 = $<<115.32*0.20=23.06>>23.06.
Thus, the total bill, including tax and tip, will be 115.32 + 9.53 + 23.06 = $<<115.32+9.53+23.06=147.91>>147.91. Answer: \boxed{147.91}.