Name the curve with the given polar equation. If it is a conic, give its eccentricity.r = 46 cos ?
A. Horizontal line passing through (0, 46)
B. Vertical line passing through (46, 0)
C. Circle of radius 23 and center (23, 0)
D. Circle of radius 23 and center (0, 23)
Answer: C
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Solve the problem.Suppose a business can sell x gadgets for p = 250 - 0.01x dollars apiece, and it costs the business 
dollars to produce the x gadgets. Determine the production level and cost per gadget required to maximize profit.
A. 11,250 gadgets at $137.50 each B. 13,750 gadgets at $112.50 each C. 111 gadgets at $248.89 each D. 10,000 gadgets at $150.00 each
Given the polynomial function f(x), find the rational zeros, then the other zeros (that is, solve the equation 
), and factor f(x) into linear factors.f(x) = 3x4 - 10x3 + 20x2 - 40x + 32
A. 
, 2, -i, i; f(x) = 
B. - 
, -2, -2i, 2i; f(x) = 
C. 
, 2, -2i, 2i; f(x) = 
D. 
, 2, -4i, 4i; f(x) = 
Find the impedance of a circuit with reactance 
and resistance 
. (See illustration.) Use the rules for working with measurements.
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A. 
B. 
C. 
D. 
E. 
Solve the equation.
a = 0
A. 1 B. 3 C. 0 D. -3