Solve the equation and check.
A. x = 6
B. x = 7
C. x = 4
D. x = 3
E. x = 5
Answer: C
Mathematics
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Find dy/dx without eliminating the parameter.x = 4 tan t - 2, y = 6 sec t + 3, t ? 
A. 
sec t
B. 
csc t
C. 
tan t
D. 
sin t
Mathematics
Name the conic or limiting form represented by the given equation.9x2 + 18x + 25y2 - 50y - 191 = 0
A. Ellipse B. Point C. Empty set D. Hyperbola
Mathematics
Evaluate the expression.
+ 
A. -57 B. -23 C. -197 D. 63
Mathematics
Give a rule for the piecewise-defined function. Then give the domain and range.
A. f(x) = 
; Domain: (-?, ?), Range: (-?, 3] ? [3, ?)
B. f(x) = 
; Domain: (-?, 3] ? [3, ?), Range: (-?, ?)
C. f(x) = 
; Domain: (-?, 3) ? (3, ?), Range: (-?, ?)
D. f(x) = 
; Domain: (-?, ?), Range: (-?, 3) ? (3, ?)
Mathematics