Find the equation of the hyperbola with foci ,  and 

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?



A.
B.
C.
D.
E. none of these

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Answer: A

Mathematics

Solve the problem.If f(x) = -3x + 5 and g(x) = 5x + 8, find g(f(x)).

A. -15x + 29 B. -15x - 17 C. 15x + 33 D. -15x + 33

Rationalize the denominator and simplify. Assume that all variables represent positive real numbers.

A.
B. -22 
C. -1
D.

Evaluate the expression using the given values.3x - 9y2; x = 3, y = -4.

A. 153 B. -63 C. -27 D. -135

Write a formula to express the relationship. Use k as the constant of variation.The surface area of a sphere S varies directly as the square of its radius r.

A. S = 
B. S = k2r
C. S = 
D. S = kr2