Solve the problem.Let 
represent the number of students present in a large class, where x represents the number of hours of study required weekly. What is the rate of change of the number of students in the class with respect to the number of hours of study?
A. 16
B. -169
C. 169
D. -16
Answer: D
Mathematics
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Solve.Write a polynomial in factored form that represents the total area of the figure.
A. (x + 2)(x + 6) B. x2 + 12 C. (x - 2)(x - 6) D. x2 + 8x + 12
Mathematics
Use rational exponents to write a single radical expression.
A. 
B. 
C. 
D. 
Mathematics
Graph.x2 - y2 = 18
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.If cot ? = - 
and 
< ? < ?, find csc ?.
A. - 4
B. 4
C. - 
D. 
Mathematics