Find the vertex, focus, and directrix of the parabola with the given equation.(x + 2)2 = 16(y - 1)
A. vertex: (-2, 1)
focus: (-2, -3)
directrix: x = 5
B. vertex: (1, -2)
focus: (1, 2)
directrix: y = -6
C. vertex: (-2, 1)
focus: (-2, 5)
directrix: y = -3
D. vertex: (2, -1)
focus: (2, 3)
directrix: y = -5
Answer: C
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Find the potential function f for the field F.F = - 
i + 
j - 
k
A. f(x, y, z) = 
- 
+ 
+ C
B. f(x, y, z) = 
+ C
C. f(x, y, z)= ln 
+ C
D. f(x, y, z) = ln (y - x - z) + C
Solve the equation.3x + 23 = 2x + 100
A. 77 B. 76 C. 125 D. 123
Expert Analysts Resources (EAR) has provided you with the following information about three companies you are currently evaluating: ? Company Degree of Operating Leverage (DOL) Degree of Financial Leverage (DFL) Acme 1.5× 6.0× Apex 3.0× 4.0× Alps 5.0× 2.0× ? Based on this information, which
firm is regarded as having the greatest overall risk? A. Acme, because it has the highest degree of financial leverage (DFL). B. Acme, because has the highest degree of total leverage (DTL). C. Apex, because it has the highest degree of total leverage (DTL). D. Alps, because it has the highest degree of operating leverage (DOL). E. Acme, because it has the lowest degree of operating leverage (DOL).
Find the unit price.A 1
-lb package of seedless grapes costs $3.81. Round to the nearest hundredth of a dollar.
A. $0.16/lb B. $5.72/lb C. $2.54/lb D. $1.91/lb