Determine an appropriate viewing window for the given function and use it to display its graph.f(x) = 
A. 
B. 
C. 
D. 
Answer: C
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Establish the identity.csc u - sin u = cos u cot u
What will be an ideal response?
Find a rectangular equation for the plane curve defined by the parametric equations.x = 3 tan t, y = 4 sec t; 0 ? t ? 2?
A. y = x2 - 9; for x in -3 ? x ? 3
B. 
+ 
= 1; for x in -? < x < ?
C. 
- 
= 1; for x in -? < x < ?
D. y = 4
; for x in -? < x < ?
Complete the identity.
= ?
A. tan x + tan y
B. cot 
C. tan 
D. tan 
Solve the problem.Along with incomes, people's charitable contributions have steadily increased over the past few years. The table below shows the average deduction for charitable contributions reported on individual income tax returns for the period 1993 to 1998. Find the average rate of change between 1995 and 1997.
A. $320 per year B. $600 per year C. $300 per year D. $345 per year