Final answer:
To leave a 20% tip on a $56.39 restaurant bill, convert 20% to a decimal (0.20) and multiply by the bill amount to get $11.278. Rounded to the nearest hundredth, the tip would be $11.28.
Step-by-step explanation:
To calculate a 20% tip on a restaurant bill of $56.39, you first need to convert the percentage to a decimal. This is done by dividing the percentage by 100, so 20% becomes 0.20. Then, multiply the bill amount by this decimal to find the tip:
Tip = $56.39 × 0.20
Calculating this results in a tip of $11.278. When you round this to the nearest hundredth of a dollar, you get $11.28. Therefore, if you want to leave a 20% tip on a $56.39 restaurant bill, you would leave $11.28.