Ties into chapter 7 of Pulling Together, though it's completely stand alone.
Test
Find the value(s) of d such that 5x2 + 5(d - 3)x - 9d2 + 15d + 30 = 0 has one real root.
Kelsi stared at the problem as her eyes blurred. This was the last question on today's math quiz she really hadn't studied for, and she was determined to finish the test wrong answers or no. So she worked what she could and guessed the rest, turning in the sheet just as the bell rang.