To calculate a 16% tip on a bill of $42.68, you can use the following formula:
\[ \text{Tip} = \text{Bill} \times \text{Tip Percentage} \]
Substituting the values:
\[ \text{Tip} = 42.68 \times 0.16 \]
Now, let's calculate that:
\[ \text{Tip} = 42.68 \times 0.16 = 6.8376 \]
Rounding to two decimal places, the tip amount is approximately $6.84.
Now, let's compare this to the options given:
- $8.11
- $7.25
- $6.38
- $8.96
- $6.40
The closest amount to $6.84 is $6.40.
So, the answer is $6.40.