Solve the problem.An exam consists of 9 multiple-choice questions and 6 essay questions. If the student must answer 7 of the multiple-choice questions and 3 of the essay questions, in how many ways can the questions be chosen?
A. 21,772,800
B. 720
C. 1134
D. 261,273,600
Answer: B
Mathematics
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Evaluate the integral.
A. 4 sech x2 + C
B. 8 csch x2 + C
C. 
+ C
D. - 4 sech x2 + C
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Find the derivative of the function at the given point in the direction of A.
A = 12i - 5j
A. 
B. 
C. 
D. 
Mathematics
Write an equation of the line through the given point with the given slope. Write the equation in slope-intercept form.(5, 3); slope: - 
A. y = - 
x + 
B. y = - 
x - 
C. y = - 
x + 
D. y = - 
x - 
Mathematics
Multiply using the rules for special products.(p - r)(p + r)
A. p2 + r2 B. 2p2 - r2 C. p2 - r2 D. p2 - 2r2
Mathematics