Solve the problem.By switching service providers, a family's telephone bill decreased from about $50 a month to about $43. What was the percent of decrease?
A. 7%
B. 16.3%
C. 14%
D. 15%
Answer: C
Mathematics
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Decide whether the equation is conditional, an identity, or a contradiction. Give the solution set.8m + 10 = 2(2m - 5)
A. Identity; {all real numbers} B. Conditional; {-5} C. Conditional; {-0} D. Contradiction; ?
Mathematics
Solve the equation by factoring.x2 - x = 30
A. {5, 6} B. {1, 30} C. {-5, 6} D. {-5, -6}
Mathematics
Determine the viewing window used. 
A. 
B. 
C. 
D. 
Mathematics
Let the universe be the collection of all college students. Let p(x) be the open statement "x likes classical music." Write the given statement symbolically.All college students like classical music.
Fill in the blank(s) with the appropriate word(s).
Mathematics