Simplify. 2x+7y+3x−4y please help

What numbers are included in the set of integers? what numbers are not included?

What is the factored form of the following expressions? d^2 – 13d + 36

Acampus club held a bake sale as a fund raiser, selling coffee, muffins, and bacon and eggs sandwiches. the club members charged $1 for a cup of coffee, 3$ for a muffin , and $4 for a back. and egg sandwich. they sold a total of 55 items , easing $119. of the club members sold 5 more muffins than cups of coffee, how many bacon and egg sandwiches he’s did they sell