Expand and simplify: (x + 4)².
Correct answer(s):
- x² + 8x + 16
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Find the range of the data set: 9, 19, 21, 27, 39.
Correct answer(s):
- 30
Simplify √250 as much as possible.
Correct answer(s):
- 5√10
Simplify using exponent laws: 10^6 × 10^1.
Correct answer(s):
- 10^7
The sequence is 9, 11, 13, 15, … . What is the 12th term?
Correct answer(s):
- 31
In a class of 39 students, 18 study only Algebra, 7 study only Geometry, and 8 study both. How many study Algebra or Geometry?
Correct answer(s):
- 33
In a class of 45 students, 10 study only Algebra, 15 study only Geometry, and 12 study both. How many study Algebra or Geometry?
Correct answer(s):
- 37
Factorize completely: 30x + 50.
Correct answer(s):
- 5(6x + 10)
If U = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12} and A = {3, 4, 7, 8, 9}, what is A′?
Correct answer(s):
- {1, 2, 5, 6, 10, 11, 12}
Find the slope of the line passing through (1, 0) and (-1, 5).
Correct answer(s):
- -5/2
Multiply the matrix [[5, 1], [0, -5]] by -2.
Correct answer(s):
- [[-10, -2], [0, 10]]
Solve for x: 2(x + 7) – 7 = 7.
Correct answer(s):
- 0
Find the slope of the line passing through (4, 3) and (0, 0).
Correct answer(s):
- 3/4
Find the range of the data set: 14, 17, 22, 26, 28.
Correct answer(s):
- 14
The sequence is -6, -3, 0, 3, … . What is the 12th term?
Correct answer(s):
- 27
Solve for x: 5x – 9 = 1.
Correct answer(s):
- 2
The sequence is 7, 4, 1, -2, … . What is the 10th term?
Correct answer(s):
- -20
If f(x) = 6x + 6, find f(-4).
Correct answer(s):
- -18
Solve the system: 2x + 3y = 10 and 2x – 1y = -6.
Correct answer(s):
- x = -1, y = 4
Find the slope of the line passing through (-2, -6) and (-5, -1).
Correct answer(s):
- -5/3