Find the domain of the rational expression.
A. {x|x is a real number and x ? 7}
B. {x|x is a real number}
C. {x|x is a real number and x ? 3}
D. {x|x is a real number and x ? 3 and x ? 7}
Answer: B
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Write a fraction to represent the shaded part of the figure.
A. 
B. 
C. 
D. 
Solve the problem.A company makes 3 types of cable. Cable A requires 3 black, 3 white, and 2 red wires. B requires 1 black, 2 white, and 1 red. C requires 2 black, 1 white, and 2 red. The company used 100 black, 110 white and 85 red wires. How many of each type of cable were made?
A. 15 A; 98 B; 15 C B. 15 A; 25 B; 15 C C. 15 A; 25 B; 15 C D. 15 A; 25 B; 88 C
Factor out the greatest common factor. Simplify the factors, if possible.4x(5x + 3) - 5(5x + 3)
A. (20x - 5)(x + 3) B. (20x + 5)(x - 3) C. (4x - 5)(5x + 3) D. (4x + 5)(5x - 3)
Fill in the blank with one of the words or phrases listed below. 
Use the facts below. 2 ? 3 = 6
4 + 17 = 21
20 - 9 = 11
The 35 above is called the 
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A. divisor
B. minuend
C. quotient
D. dividend