Find the vertices of the hyperbola.16y2 - 25x2 = 400
A. (0, 4), (0, -4)
B. (0, 5), (0, -5)
C. (-4, 0), (4, 0)
D. (-5, 0), (5, 0)
Answer: B
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A value of sinh x or cosh x is given. Use the definitions and the identity 
to find the value of the other indicated hyperbolic function.cosh x = 
, x > 0, sinh x =
A. - 
B. 
C. 
D. 
Replace the Cartesian equation with an equivalent polar equation.2x + 3y = 6
A. 2 sin ? + 3 cos ? = 6r B. 2 cos ? + 3 sin ? = 6r C. r(2 sin ? + 3 cos ?) = 6 D. r(2 cos ? + 3 sin ?) = 6
Solve the problem.Vinyl sheet flooring is to be installed in an area shaped as shown. How many square meters of flooring will be needed in all? If the vinyl flooring costs $2 for each square meter, then how much will it cost to cover the area?
A. 196 m2; $392 B. 321 m2; $642 C. 131 m2; $262 D. 186 m2; $372
Find the exact value of the expression.cos 105°
A. 
B. 
C. 
D. 