00. Round the number 2.71828182845904523536 to the nearest thousandth.
01. Solve for b:  2b = -2b                               [show your math]
02. Evaluate:  91 / (5 + -5 * 1)                         [show your math]
03. Solve for d:  5(2d + 3) = -3(-3d - 4)                [show your math]
04. Briefly explain what a variable is.
05. Solve for x:  5x - 4 = 3(2)(1)                       [show your math]
06. Solve for x:  2x + 4x = 3x - 2x + 5                  [show your math]
07. -h  equals what when h = -91?
08. Calculate  y  when  x = 3:  y = 5x + 76              [show your math]
09. Evaluate:  2^3 + 3^2 - 4^0 + 3(2 + 1)                [show your math]
10. Simplify:  2xy + 2x - 2y + 2yx - 5x                  [combine like terms]
11. Solve for t:  t = t + 1                              [show your math]
12. Solve for m:  5 = m(2) - 1                           [show your math]
13. Evaluate:  0 * (91 + 91 * 91 / 91 - 91)              [show your math]
14. Solve for b when x = 2:  91 = 45(x) + b              [show your math]
15. Evaluate:  91^0 + 91^1 * 91^0 - 91^0                 [show your math]
16. Solve for x:  91x + 91x = 91 + 91                    [show your math]
17. Solve for r:  C = 2πr                                [show your math]
18. Solve for k:  (1/2)k = 45.5                          [show your math]
19. Solve for t:  1 = (1/91)t                            [show your math]

The remaining problems use "expression" A:  -x + 5xy + y - 3xyz + 78

20. How many "terms" does expression A have?
21. What is the "coefficient" of the first term in expression A?
22. How many "factors" does term #2 of expression A have?
23. No or Yes:  Expression A is also an "equation".
24. No or Yes:  Term #1 and term #3 are "like terms."
25. Evaluate expression A when  x = -3, y = -2, z = 1.   [show your math]