State whether the common form of the argument is valid or invalid and give a reason. p ? q
? p ? r
A. Valid, transitive reasoning
B. Valid, direct reasoning
C. Invalid, misuse of disjunctive reasoning
D. Invalid, misuse of transitive reasoning
Answer: A
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Solve the equation. Express radicals in simplest form.3x2 - 3x + 6 = 10x + 3
A. 
B. 
C. 
D. 
Express the sum using summation notation. Use a lower limit of summation, not necessarily 1, and k for the index of summation.7 + 9 + 11 + 13 + . . . + 23
A. 
B. 
C. 
D. 
A sorority has 27 members, 21 of whom are full members and 6 are pledges. Two persons are selected at random from the membership list of the sorority. Find the probability: the first person selected is a pledge. ?
A. 
B. 
C. 
D. 
E. 
The pie chart below shows the number of pizzas consumed by college students in a typical month. Use the chart to answer the question.
If State University has approximately 47,000 students, about how many would you expect to consume 5-6 pizzas in a typical month?
A. 15,980 students B. 846 students C. 8460 students D. 1598 students