exam Maths Puzzle Numerical Ability

I am having trouble with hyperbolas. Please help me determine the foci and equations of the asymptotes of: 9x^2-25y^2=225. Thanks for your help.

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exam Other Question
-7 squared = 294 or -294 Consider f(x)=3x^4-11x^3+10x-4; use the Rational Zero Theorem to fine a zero.
a)x=0
b)x=1
c)x=-5
D)x=-1