Use a graphing utility to find the discontinuities of the given rational function.f(x) = 
A. 3
B. -1
C. 1
D. The function is continuous for all values of x.
Answer: C
Mathematics
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Determine the sign of the trigonometric function.cot(-217°)
A. Positive B. Negative
Mathematics
Factor the polynomial completely using the trial and error method.-45y2 + 32x2 + 4xy
A. (4x - 9y)(8x - 5y) B. (8x - 5y)(4x + 9y) C. (4x + 5y)(8x - 9y) D. (4x - 5y)(8x + 9y)
Mathematics
Let 
. Find the composite function.
?
?
A. ?
B. 
C. 
D. 
E. none of the above
Mathematics
Find an equation for the ellipse described.Center at (0, 0); focus at (2, 0); vertex at (5, 0)
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Mathematics