Solve the problem.Conrad and Dobler are the two top salesmen in an office that sells personal computers and security systems. The tables below show their sales figures for July and August. July Sales ($) August Sales ($) 
Write the matrix which shows the increase (decrease) in sales from July to August.
A. 
B. 
C. 
D. 
Answer: B
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Multiply and simplify any radicals in your answer. Assume that all variables represent positive real numbers.
(3
- 8
)
A. 2
B. 2
C. 18
- 8
D. 20
Solve the system of equations.
A. x = 2 - 5z, and y = 3z - 1, where z is any real number
or {(x, y, z) |x = 2 - 5z, and y = 3z - 1, where z is any real number}
B. x = 2 + 7z, and y = -3z - 1, where z is any real number
or {(x, y, z) |x = 2 + 7z, and y = -3z - 1, where z is any real number}
C. x = 1 - 5z, and y = 3z - 
, where z is any real number
or 
D. x = -2 - 7z, and y = -3z -1, where z is any real number
or {(x, y, z) |x = -2 - 7z, and y = -3z -1, where z is any real number}
Solve the problem.On a map of the Thunderbird Country Club golf course, 1.5 inches represent 15 yards. How long is the 17th hole if the map shows 15.5 inches?
A. 1.5 yd B. 348.75 yd C. 155 yd D. 232.5 yd
Solve the equation.x3 + 3x2 - x - 3 = 0
A. {- 3, 3 } B. { 1, - 3, 3 } C. { 9 } D. {-1, 1, - 3 }