Emma has $26 for her weekend expenses. She spent $12.81, including tax, on a new book. Additionally, she needs to set aside $10.00 for a lunch outing next week. If stickers cost $0.42 per package, tax included, describe the maximum number of packages (p) Emma can buy
Emma has $26 available for her weekend expenses. She spent $12.81 on a new book and needs to set aside $10.00 for a lunch outing next week. Thus, she has $26 - $12.81 - $10.00 = $<<26-12.81-10=3.19>>3.19 remaining for stickers.
Stickers cost $0.42 per package, tax included. Thus, the maximum number of packages Emma can buy is $3.19 / $0.42 = <<3.19/0.42=7.60>>7.60.
However, Emma cannot purchase a fraction of a package, so the maximum number of packages she can buy is 7. Answer: \boxed{7}.