Factor out the GCF from the polynomial.13(y + 3) - x(y + 3)
A. (y + 3)(13 - x)
B. (y - 3)(x - 13)
C. (y + 3)(13 + x)
D. (13y + 39) - (xy + 3x)
Answer: A
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Solve the triangle. 
A. b = 6.94, A = 96.5°, C = 33.5° B. b = 5.94, A = 96.5°, C = 33.5° C. b = 6.94, A = 33.5°, C = 96.5° D. b = 7.94, A = 33.5°, C = 96.5°
Solve and graph the solution set on a number line. Express the solution set in both set-builder and interval notations.|x - 7| ? 0
A. (7, ?)
B. {7}
C. (-?, ?)
D. (-7, 7)
Solve the problem.A 100-liter mixture of chlorine and water is 8% chlorine. (i) Write a rational expression in x whose values give the percentage (in decimal form) of the mixture that is chlorine when x gallons of water are added to the mixture. (ii) Find the percentage of chlorine in the mixture if 70 gallons of water are added to it. Round to the nearest percent, if necessary.
A. (i) 
;
(ii) 11%
B. (i) 
;
(ii) 154%
C. (i) 
;
(ii) 5%
D. (i) 
;
(ii) 8%
Solve the problem. Snell's Law states that 
Use this law to find the requested value. If 
find 
Round your answer to the nearest degree.
A. ?2 = 35° B. ?2 = 31° C. ?2 = 32° D. ?2 = 34°