To calculate the total discount that Carson receives, we can first find the amount of the 40% discount on the sweater, which is:
40% of $65.99 = 0.4 x $65.99 = $26.40
Then, we can add the additional $10 coupon discount to get the total discount:
$26.40 + $10 = $36.40
Therefore, the total discount that Carson receives on the sweater is $36.40.
To find the final price that Carson pays after the discounts, we can subtract the total discount from the original price:
$65.99 - $36.40 = $29.59
Therefore, Carson pays $29.59 for the sweater after the discounts.