The answer key for “7-1 Additional Practice: Adding and Subtracting Polynomials” sat face-down on Ms. Kellar’s desk, a silent judge.
He distributed the negative: 5y³ - 3y³ = 2y³. 0y² - 4y² = -4y². -2y - (-y) = -2y + y = -1y. 1 - (-6) = 7. The answer key for “7-1 Additional Practice: Adding
At the top, in blue ink, she had written: “You found the tower. +1 extra credit for honesty. I saw you look at the key and choose not to flip it.” in blue ink
His hand hovered.
Ms. Kellar walked back in. “Time’s up. Pass your papers forward.” The answer key for “7-1 Additional Practice: Adding
Leo passed his. He hadn’t checked the key. He had no idea if his answer was right.