Consider the question. Cassidy is grounded for 14 days for lying about her report card, plus 3 extra days for each grade below a B. If Cassidy got four grades below a B, how long is she grounded for?
If the answer is '26'; explain the reasoning:
First find how many days Cassidy is grounded for the low grades: 4 grades * 3 days / grade = 12 days. Then add that time to the 14 days she's grounded for lying to find the total grounding length: 12 days + 14 days = 26 days.