TEST 1: If you wrote your exam at 2:30pm, the solutions below will give you the correct mathematical answer; the questions on your paper may be in a different order and the letter answers (from A-F) for each question may be different. But you find will the solutions to every question on your paper.
The same goes for tests written at 4pm.
Test 1, written at 2:30pm (versions 1 &2)
Test 1, written at 4pm (versions 3 & 4)
Test 2 (version 1)
Test 3 (version 1)
The Bonus question solution can be found in solutions to Test 3 (version 1).
Test 4 (version 1)