Answer:
8x + 12y ≤ 216
Explanation:
Letting x represent the number of youth sweatshirts, we know that each one costs $8. This gives us the expression 8x.
Letting y represent the number of adult sweatshirts, we know that each one costs $12. This gives us the expression 12y.
Together this gives us the expression 8x+12y.
"At most" means the amount of money brought in could be that much or less. This means the symbol less than or equal to, which gives us
8x + 12y ≤ 216.