Simplify the expression.
- 
A. csc 2 x
B. tan x
C. cot x
D. -tan x
Answer: B
Mathematics
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Find the focus and directrix of the parabola.y2 = 28x
A. (7, 7); x = 7 B. (7, 0); x = 7 C. (0, 7); y = -7 D. (7, 0); x = -7
Mathematics
Find y ".y = 
tan(9x - 5)
A. 
sec2(9x - 5) tan(9x - 5)
B. 
sec(9x - 5)
C. 
sec2(9x - 5) tan(9x - 5)
D. 
sec2(9x - 5)
Mathematics
Perform the indicated operation.Given f(x) = 
and g(x) = 
, find f(x) ÷ g(x).
A. x + 7
B. 
C. 
D. 
Mathematics
Provide an appropriate response.Interest compounding:
A. results in less interest than simple interest B. calculates interest periodically C. calculates the present when the future is known D. is done only once a year
Mathematics