Solve the problem.In a class of 50 students, 27 are Democrats, 10 are business majors, and 5 of the business majors are Democrats. If one student is randomly selected from the class, find the probability of choosing a Democrat or a business major.
A. 
B. 
C. 
D. 
Answer: A
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Use the at least once rule to find the indicated probability.A study conducted at a certain college shows that 61% of the school's graduates find a job in their chosen field within a year after graduation. Find the probability that among 8 randomly selected graduates, at least one finds a job in his or her chosen field within a year of graduating.
A. 0.125 B. 0.999 C. 0.981 D. 0.610
Solve the problem.Integrate 
over the region 0 ? x2 + y2 ? 16.
A. 2?(1 - cos 16) B. 2?(1 - cos2 4) C. ?(1 - cos 16) D. ?(1 - cos2 4)
Provide an appropriate response.In creating a circle graph, what fractional part of the circle should be used to show that $45 of a total of $450 is budgeted for clothes? (Answer as a fraction in lowest terms.)
Fill in the blank(s) with the appropriate word(s).
Solve the problem.For what numbers x, 0 ? x ? 2?, does cos x = 1?
A. 
B. 
, 
C. 0, 2?
D. none