Jeremy is shopping online for skating equipment. He buys a longboard complete with trucks and wheels for $146.25. At checkout, Jeremy gets a discount of $21 on his purchase. The final amount that Jeremy will be billed is $ 42.00 104.25 125.25 167.25

To solve this, you would need to determine the difference. To do this, you would simply subtract the discount from the total price. 
$146.25 - $21 = $125.25

The final amount Jeremy will be billed is $125.25. 

I hope this helps!