Provide an appropriate response.For n > 3, show that the number of diagonals in a plane polygon of n sides is 
.
What will be an ideal response?
Answers will vary.
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Provide an appropriate response.Which of the following are points on a horizontal line?
A. (-6, 3) and (-6, 7) B. (-2, 5) and (2, 1) C. (2, 9) and (1, -9) D. (-1, 4) and (-3, 4)
Solve the problem.A trough is to be made with an end of the dimensions shown. The length of the trough is to be 
long. Only the angle ? can be varied. What value of ? will maximize the trough's volume?
A. 52 B. 32° C. 30° D. 8
Provide an appropriate response.On the given graph of y = sec x sketch the graph of y = sec-1 x as defined in the text. Give the domain and the range.
What will be an ideal response?
If possible, solve the system of equations. Use any method. If there is not a unique solution to a system, say why. 8x - 3y = 8-16x + 6y = -32
A. No solution; inconsistent system of equations
B. (2, 4)
C. Infinite number of solutions; dependent equations
D. 