Math Overview
Module 1 (Easier)
Module 2 (Harder)
Question-by-Question
Dashed line = 1:30 target
Details
Dashed line = 1:30 target
Details
Problem Areas
🚨 M2 Q20 — Quadratic Word Problem (8:30!)
Seal dive depth. Tried exponential regression (wrong tool). Eventually typed correct vertex formula after 8 min. Should take 90s.
🚨 M2 Q21 — Unit Conversion (3:15)
250 sq ft/hr → sq m/min. Confused about squaring the linear conversion factor (3.28²).
🚨 M2 Q22 — Perpendicular Lines (3:00)
Identify perpendicular line pairs. Requires m₁×m₂=−1. Conceptual question that took too long.
⚠️ M2 Q14 — Y-Intercept from Table (3:00)
Two points → slope → y-intercept at x=k−5. Straightforward but notation confused the taker.
⚠️ M2 Q10 — Budget/Tax (2:30)
14000÷81÷1.07. One calculator step, took 2.5 min second-guessing the setup.
⚠️ M2 Q7 — Factoring (2:15)
Factor (x−7) from numerator, 2 from denominator, cancel. Should be 30s.
Improvement Tips
Quadratic Word Problems
- "Maximum/minimum" = vertex →
g(t) = a(t−h)² + k - Find a from zero:
0 = a(12−6)² + 302.4 → a = −8.4 - Plug in:
g(10) = −8.4(16) + 302.4 = 168. Target: 90s. - Never use regression for these — it's for data fitting only.
Unit Conversions
- Dimensional analysis:
250 ft²/hr × (1hr/60min) × (1m/3.28ft)² - Square the linear factor for area:
3.28² = 10.76. Target: 60s.
Factoring
- Scan for common binomial factors before expanding anything.
(x−7)(8x−3) / 2(x−7) = (8x−3)/2. Target: 30s.
General Pacing
- Module 1: target 1:00/q — bank time. Module 2: target 1:30/q.
- Past 2 min? Flag it, guess, move on. Save 3-4 min for review.
- Don't open calculator for conceptual questions.