Final answer:
Joey will pay $25,500 for the car after the discount is applied.
Step-by-step explanation:
To find out how much Joey will pay for the car after the discount is applied, we need to calculate 15% of $30,000 and subtract it from the original price.
Step 1: Calculate 15% of $30,000: $30,000 * 15/100 = $4,500
Step 2: Subtract the discount from the original price: $30,000 - $4,500 = $25,500
Therefore, Joey will pay $25,500 for the car after the discount is applied.