Solve the problem.The psychology lab at a college is staffed by 9 male doctoral students, 11 female doctoral students, 12 male undergraduates, and 10 female undergraduates. If a person is selected at random from the group, find the probability that the selected person is an undergraduate or a female.
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Solve the problem.Given a group of students: G = {Allen, Brenda, Chad, Dorothy, Eric}, count the number of different ways of choosing a treasurer and a secretary if the two must not be the same sex.
A. 10 B. 6 C. 12 D. 3
Mathematics
Sketch the graph for the equation by plotting points.5x + 3y = 15
A. 
B. 
C. 
D. 
Mathematics
Use graphs to find the set.(-?, 9) ? [-2, 12)
A. (-?, 12) B. [-2, 9) C. (9, 12) D. (-?, -2]
Mathematics
Solve the problem.A survey revealed that 28% of people are entertained by reading books, 42% are entertained by watching TV, and 30% are entertained by both books and TV. What is the probability that a person will be entertained by either books or TV? Express the answer as a percentage.
A. 100% B. 30% C. 40% D. 70%
Mathematics