Given a group of students: 
or 
count the different ways of choosing the following officers or representatives for student congress. Assume that no one can hold more than one office.Four representatives
A. 1
B. 4
C. 120
D. 10
Answer: C
Mathematics
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You join a health club. You agree to pay $300 up front plus $20 a month. Which of the following is true? ?
A. ?Equation of Line: y = 20x + 300. B. ?Equation of Line: y = 300x + 20. C. ?Equation of Line: y = 20x D. ?Slope of Line: 300. E. ?Y-intercept: 20.
Mathematics
Find the center of mass of a thin plate covering the given region with the given density function.The region bounded by the curves y = ± 
and the lines x = 1 and x = 9, with density ?(x) = 
A. 
= 3, 
= 0
B. 
= 2, 
= 0
C. 
= 5, 
= 0
D. 
= 4, 
= 0
Mathematics
Fill in the missing factor.x2 - 11x + 30 = (x - 5)( )
A. 5 - x B. x - 6 C. x + 6 D. x2 + 5
Mathematics
Simplify.
A. 5
B. 5
C. 10
D. 10
Mathematics