Find the vertex and focus of the parabola below.
a. Vertex: 
Focus: 
b. Vertex: 
Focus: 
c. Vertex: 
Focus: 
d. Vertex: 
Focus: 
e. Vertex: 
Focus: 
b. Vertex:
Focus:
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Find the gradient ?f.f(x, y) = xy8 - x6
A. 8xy7i + (y8 - 6x5)j B. (y8 - 6x5)i + 8y7j C. (xy8 - 6x5)i + 8xy7j D. (y8 - 6x5)i + 8xy7j
Use the Huntington-Hill apportionment principle to decide who is most deserving of an additional representative. Subdivision A, with 1600 residents, has 11 representatives in the City Hall, while Subdivision B, with 2700 residents, has 17 representatives, and Subdivision C, with 950 residents, has 7 representatives.
A. Subdivision C B. Subdivision B C. Subdivision A
Solve the problem.A pair of rabbits are introduced on a small island, and the population grows until the food supply and natural enemies of the rabbits on the island limit the population. If the number of rabbits is 
where t is the number of years after the rabbits are introduced, how long does it take for the rabbit population to reach 100?
A. 7 years B. 9 years C. 10 years D. 11 years
Provide an appropriate response.True or false? i3 = -i
A. True B. False