Which expressions are quadratic expressions? Check all that apply. z2
2x + 7x – 10
2x2 + 9x – 7
500(0.25)t – 1
13x3 + 21x2 – 5

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