Final answer:
The commission earned on a sales price totaling $18,000.00 is $3,600.00.
Step-by-step explanation:
To calculate the commission earned, we need to multiply the total sales price by the commission rate. In this case, the commission rate is {{20%}} or {{0.2}}.
To find the commission earned, multiply $18,000.00 by 0.2:
${{18,000.00}} imes {{0.2}} = ${{3,600.00}}
Therefore, the commission earned on a sales price totaling $18,000.00 is $3,600.00.