Simplify. Assume that variables can represent any value.
A. 8t2
B. 8t
C. -8t
D. 8
Answer: D
Mathematics
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Graph the parabola or ellipse. Include the directrix that corresponds to the focus at the origin.r = 
A. 
B. 
C. 
D. 
Mathematics
Write the function in the form y = f(u) and u = g(x). Then find dy/dx as a function of x.y = csc(cot x)
A. y = csc u; u = cot x; 
= csc3 x cot x
B. y = cot u; u = csc x; 
= csc2(csc x) csc x cot x
C. y = csc u; u = cot x; 
= - csc(cot x) cot(cot x)
D. y = csc u; u = cot x; 
= csc(cot x) cot(cot x) csc2 x
Mathematics
For the point given in rectangular coordinates, find equivalent polar coordinates 
for 
and 
(-7, -7)
A. (-7, 225°)
B. (-14, 315°)
C. (7
, 225°)
D. (7
, 315°)
Mathematics
Decide whether or not the ordered pair is a solution of the system.(-2, -5)x + y = -7x - y = 3
A. Yes B. No
Mathematics