Find the nth term an of the geometric sequence.7, -14, 28, -56, 112, . . .
A. an = (7)(-2)n-1
B. an = a1 - 2n
C. an = (7)(-2n)
D. an = (7)(-2)n
Answer: A
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Graph the polar equation.r = 5 sin 2?
A. 
B. 
C. 
D. 
Find the extreme values of the function subject to the given constraint.
A. Maximum: none; minimum: 
at 
B. Maximum: none; minimum: 
at 
C. Maximum: none; minimum: 
at 
D. Maximum: none; minimum: 
at 
Find the directrices of the ellipse.25x2 + 36y2 = 900
A. y = ± 
B. x = ± 
C. y = ± 
D. x = ± 
Decide if the statement “If the sum of two angles is 90° then the angles are complimentary” is true or false. Then form its converse and decide if its converse is true or false. If both the statement and its converse are true, write the biconditional that is equivalent to both statements.
What will be an ideal response?