Find the vertices and locate the foci for the hyperbola whose equation is given.y = ± 
A. vertices: (-
, 0), (
, 0)
foci: (-2
, 0), (2
, 0)
B. vertices: (0, -
), (0, 
)
foci: (0, -2
), (0, 2
)
C. vertices: (-6, 0), (6, 0)
foci: (-
, 0), (
, 0)
D. vertices: (-6, 0), (6, 0)
foci: (-2
, 0), (2
, 0)
Answer: A
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Solve the given trigonometric equation analytically (using identities when necessary for exact values when possible) for values of x for 0 ? x < 2?.sin2 x + sin x = 0
A. 0, ?, 
B. 0, ?, 
, 
C. 0, ?, 
, 
D. 0, ?, 
, 
Multiply.× 
A. 83.3 B. 234.26 C. 233.16 D. 233.27
Provide the proper response.If at the current production level the marginal cost of a company is zero; at a slightly decreased production level the marginal cost is positive; and at a slightly increased production level the production cost is negative; how should the company alter its production level?
A. The production level should be increased. B. The production level should remain at its current level. C. The production level should be decreased.
Write the English phrase as an algebraic expression. Let the variable x represent the number.4 more than 8 times a number
A. 4x + 8 B. 8(4 + x) C. 8x + 4 D. 12x