Final answer:
The amount of the tip that Kaleb earns when he serves a table with a bill of $42.65, and the tip is 20% of the bill, is $8.53.
Step-by-step explanation:
To find the amount of the tip, you need to multiply the bill amount by the tip percentage. In this case, the bill amount is $42.65 and the tip is 20% of the bill. To find the tip, multiply $42.65 by 0.20:
$42.65 × 0.20 = $8.53
Therefore, the amount of the tip that Kaleb earns when he serves a table with a bill of $42.65, and the tip is 20% of the bill, is $8.53 (option A).