Solve.A nuclear cooling tower cross section is a hyperbola having a diameter of 54 ft at the center. The distance between the two foci is 96 ft. What is the equation for the hyperbola?
A. 
- 
= 1
B. 
- 
= 1
C. 
- 
= 1
D. 
- 
= 5
Answer: C
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Give an appropriate answer.If f(x, y, z) = (x4 + y2 + z)2 find fyy(x, y, z).
A. 4x4 + 12y2 + 4z B. 8y2(x4 + y2 + z) C. 4y2(x4 + y2 + z) D. 2x4 + 6y2 + 2z
Simplify the expression.
?
?
Write the answer without using negative exponents. Assume that the variable is restricted to those numbers for which the expression is defined.
?
A. 
B. ?
C. ?
D. ?
Solve the problem.The percent of people who say they plan to stay in the same job position until they retire has decreased over recent years, as shown in the table below.
Find a power function that models the data in the table using an input equal to the number of years from 2000. According to the unrounded model, what percent of people will plan to stay in the same job position until retirement in 2014?
A. 18% B. 22% C. 24% D. 19%
Convert.80 m = ____ mm
A. 0.8 B. 8000 C. 80,000 D. 0.08