Solve the problem.Find the number of units that must be produced and sold in order to yield the maximum profit, given the following equations for revenue and cost:R(x) = 70x - 0.5x2C(x) = 4x + 7.

A. 74 units
B. 66 units
C. 67 units
D. 73 units

Answer: B

Mathematics

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Plot the set of points on the real number line.

A.

B.

C.

D.

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Mathematics

Find the center, transverse axis, vertices, foci, and asymptotes of the hyperbola.(x + 4)2 - 9(y + 2)2 = 9

A. center at (-2, -4)
transverse axis is parallel to x-axis
vertices at (-5, -4) and (1, -4)
foci at (-2 - , -4) and (-2 + , -4)
asymptotes of y + 4 = - (x + 2) and y + 4 = (x + 2)
B. center at (-4, -2)
transverse axis is parallel to x-axis
vertices at (-5, -2) and (-3, -2)
foci at (-4 - , -2) and (-4 + , -2)
asymptotes of y + 2 = - 3(x + 4) and y + 2 = 3(x + 4)
C. center at (-4, -2)
transverse axis is parallel to y-axis
vertices at (-4, -5) and (-4, 1),
foci at (-4, -2 - ) and (-4, -2 + ),
asymptotes of y - 2 = - 3(x - 4) and y - 2 = 3(x - 4)
D. center at (-4, -2)
transverse axis is parallel to x-axis
vertices at (-7, -2) and (-1, -2)
foci at (-4 - , -2) and (-4 + , -2)
asymptotes of y + 2 = - (x + 4) and y + 2 = (x + 4)