Graph the parabola or ellipse. Include the directrix that corresponds to the focus at the origin.r = 
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Find a rectangular equation equivalent to the given pair of parametric equations.x = 2 cos t, y = 3 sec t; - 
< t < 
A. y = 6x; 0 < x ? 2
B. y = 
; 0 < x ? 2
C. y = 4x; 0 < x ? 2
D. y = 
; 0 < x < 2
Mathematics
The nth term of a sequence is given. Find the first 4 terms.an = 3 + 
A. 11, - 5, 11, - 5
B. - 5, - 5, - 5, - 5
C. 
, - 
, 
, - 
D. 11, 11, 11, 11
Mathematics
Use a Venn diagram to decide if the statement is true or false.A ? (B ? C)' = (A ? B') ? (A ? C') 
A. True B. False
Mathematics
Solve the problem.A camera costs $440. If the sales tax rate is 4%, how much tax is charged? Round your answer to the nearest cent.
A. $22.00 B. $13.20 C. $17.60 D. $176.00
Mathematics