exam Maths Puzzle Numerical Ability

y-8
_________
2Y^2+Y-1 What is the Domain?

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exam Other Question

If y varies as x and y=100 when x=10 and z=5, find y when x=12 and z=6.

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Evaluate the given function for the value specified. f(x)=xsquare - 7x+10 ; find (a) f (0), (b) f (5),and (c) f (-2).

a) f(0=>

b) f(5)=>

c) f(-2)=>

PLEASE HELP I AM SO CONFUSED