Find the exact value of the expression or state that it does not exist.cos-1 
A. 
B. 
C. 
D. - 
Answer: B
Mathematics
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Test the equation for symmetry with respect to the given axis, line, or pole.r = -2 cos ?; the polar axis
A. May or may not be symmetric with respect to the polar axis B. Symmetric with respect to the polar axis
Mathematics
For the points P and Q, find the distance d(P, Q).P(3
, 5
), Q(-2
, -9
)
A. 
B. 123
C. 
D. 1497
Mathematics
Find the amount or rate of discount and the sale price. Round money amounts to the nearest cent.Original price: $780 Rate of discount: 25%
A. $202.80, $577.20 B. $97.50, $682.50 C. $187.20, $592.80 D. $195.00, $585.00
Mathematics
Determine if the vertex of the graph of the equation is a maximum or minimum point. 
a. vertex is at a maximum point b. vertex is at a minimum point c. has no vertex
Mathematics