Answer:
Total cost as per Lowe's is $260 more than that of Home Depot.
Step-by-step explanation:
Given that:
Alexandro received two quotes for new carpet.
One from Home Depot and other from Lowe's.
Let quote from Home Depot =
per sq foot
As per question statement,
The quote from Lowe's =
+0.20 per sq foot
Alexandro plans to buy 1,300 square feet of carpet.
Total Cost as per Home Depot's quote = 
Total Cost as per Lowe's = 
Now taking the difference of the total cost:
Lowe's total cost - Total cost as per Home Depot.

So, the answer is:
Total cost as per Lowe's is <em>$260 more</em> than that of Home Depot.