Factor and, if possible, simplify the expression.
A. csc2x + tan2x
B. sin x + cos x
C. csc x tan x
D. 1
Answer: D
Mathematics
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Solve the problem.If h = -16t2 + 160t represents the height of a firework, in feet, t seconds after is was fired, when will the firework be 400 feet high?
A. -5 sec B. 5 sec C. 80 sec D. 25 sec
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Sketch the ellipse for the equation.16(x - 2)2 + 9(y + 2)2 = 144
A. 
B. 
C. 
D. 
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Use this graph to answer each question. Big "D" Sales 1989-1990 
MonthWhat was the difference between the highest and lowest monthly sales in 1989?
A. $2000 B. $8000 C. $6000 D. $4000
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For 
, evaluate 
at the point 
.
?
A. 
?
B.
?
C.
?
D. ?
?
E.
?
Mathematics