Answer:
The tip amount is $7.80.
Explanation:
To calculate the tip amount, you can multiply the bill amount by the tip percentage.
Tip amount = Bill amount * Tip percentage
In this case, the bill amount is $39 and the tip percentage is 20%.
Tip amount = $39 * 0.20 = $7.80
Rounding the answer to the nearest hundredth, the tip amount is $7.80.