Find the inner product for (7.2) (0,-2) and state whether the vectors are perpendicular.
a. -4; no
c. 4; no
b. -4; yes
d. 4; yes

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