Question 1 (Essay Worth 10 points) (07.02 MC) The lengths of three sides of a trapezoid are shown below: Side 1: 11z2 − 4z + 2 S
ide 2: −2z + 3 + 12z2 Side 3: 3 − 3z + 13z2 The perimeter of the trapezoid is 5z3 + 40z2 + 7z − 15. Part A: What is the total length of sides 1, 2, and 3, of the trapezoid? (4 points) Part B: What is the length of the fourth side of the trapezoid? (3 points) Part C: Do the answers for Part A and Part B show that the polynomials are closed under addition and subtraction? Justify your answer. (3 points)
