Find the number of subsets of the set.{0}
A. 1
B. 2
C. 4
D. 0
Answer: B
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Evaluate the integral.
x dx
A. x cos-1x - 
+ C
B. x cos-1x - 2
+ C
C. x cos-1x - 
+ C
D. x cos-1x + 
+ C
Solve the problem.Charlene baby-sits for $10 per hour. She also works as a tutor for $12 per hour. Because of school, her parents only allow her to work 13 hours per week. How many hours can Charlene tutor and baby-sit and still make at least $75 per week? (a) Write a system of inequalities for this situation.(b) Graph the solution set. 
What will be an ideal response?
In order to determine how American undergraduate college students feel about eliminating spring break in order to finish spring term a week early, a survey was conducted. Two hundred undergraduate students from the University of Miami (FL) were interviewed. Both of the interviewers hired to conduct the survey were told to interview 25 freshmen, 25 sophomores, 25 juniors, and 25 seniors. Of the 200 students interviewed, 20% were in favor of the elimination of spring break, 70% were opposed, and 10% had no opinion.The sampling proportion in this survey is
A. 200/(the number of American college students). B. 100%. C. 200/(the number of University of Miami, FL undergraduates). D. 20%. E. none of these
Write the expression using a multiple of a logarithm.log 9 x9
A. log 9 9x B. 9 log 9 x C. log 9 9 D. log 9 9 ? log 9 x