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Qrb501 Final Exam Essay

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Below is an essay on "Qrb501 Final Exam" from Anti Essays, your source for research papers, essays, and term paper examples.

1) Write the following as an algebraic expression using x as the variable: Twelve less than six times a number
  A.  6x – 12 [(Six times a number means 6x, and twelve less mean -12)]
 B.  –6x
 C.  –12(6x) 
 D.  12 – 6x
2) Write the following as an algebraic expression using x as the variable: The sum of a number and -8
  A.  -8 + x   [(let x be the variable number, therefore sum of variable (x) and (-8) would be x-8 or -8 + x)]
 B.  -8 - x
 C.  x(-8) 
 D.  -8x
3) Write the following as an algebraic expression using x as the variable: Triple a number subtracted from the number
  A.  x - 3x [(let x be the unknown number, and triple that number would be 3x. Triple a number (3x) has to be subtracted from the number, which is x, thus x-3x)]
 B.  x 3 – x
 C.  3x - x
 D.  3(x - x)
4) Solve: (–5)2 · (9 – 17)2 ÷ (–10)2
  A.  16     [(-5)^2 . (9-17)^2   ÷ (-10)^2 = (25) . (64) ÷ (100) = 1600 ÷ 100 = 16]
 B.  64
 C.  -6.4
 D.  -.039

5) Solve: 3(-19 + 4) ÷ -5
  A.  9 [ 3(-15) ÷ -5 which equals (-45) ÷ (-5) = 45 ÷ 5 = 9]
 B.  -13.8
 C.  0.11
 D.  13.8
6) Solve: –9 + 18 ÷ –3(–6)
  A.  27
 B.  90
 C.  -0.5
 D.  0.5 [(-9 + 18) ÷ 18 = 9 ÷ 18 = ½ = 0.5]
7) Identify the variable, constant, and coefficient of the expression: 10k – 15
  A.  variable: k; constant: 15; coefficient: 10
 B.  variable: 10; constant: k; coefficient: –15
 C.  variable: 15; constant: 10; coefficient: k
 D.  variable: k; constant: –15; coefficient: 10
8) Identify the variable, constant, and coefficient of the expression: 3p
  A.  variable: p; constant: 0; coefficient: 3
 B.  variable: 3; constant: 0; coefficient: p
 C.  variable: 3; constant: p; coefficient: 3 
 D.  variable: p; constant: 3; coefficient: 0
9) Identify the variable, constant, and coefficient of the expression: x – y
  A.  variable: x and y; constant: 0; coefficient: 1
 B.  variable: y; constant: x; coefficient: 0
 C.  variable: x; constant: –y; coefficient: 1 
 D.  variable: x and y; constant: 0;...

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