Three friends, Jessa, Tyree, and Ben, are collecting canned food for a culinary skills class. Their canned food collection goal is represented by the expression 8x2 − 4xy + 8. The friends have already collected the following number of cans: Jessa: 5xy + 17 Tyree: x2 Ben: 4x2 − 8 Part A: Write an expression to represent the amount of canned food collected so far by the three friends. Show all your work. (5 points) Part B: Write an expression that represents the number of cans the friends still need to collect to meet their goal. Show all your work. (5 points)