Final answer:
Keith's premium after the 10% Good Student Driver discount is $459.
Step-by-step explanation:
To find Keith's premium after the discount, we need to subtract the discount amount from the original premium.
Keith's premium is $510, and because his GPA is 3.0, he gets a 10% Good Student Driver discount. To calculate the discount, we multiply the premium by the discount percentage:
Discount = $510 * 0.10 = $51
To find the premium after the discount, we subtract the discount amount from the original premium:
Premium after discount = $510 - $51 = $459
Therefore, Keith's premium after the 10% Good Student Driver discount is $459.