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# Qrb501 Final Exam Essay

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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