exam Maths Puzzle Numerical Ability

Solve the following system by graphing and algebraic methods

x 2 - y =3

x - y =3

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exam Other Question

Which value of n is a solution for both 3(n-3) {{{ x <= sqrt( y^2+1 ) }}} and 4(n-2) > -1? Casey is 4yrs old and Jordan is 13 yrs. old .....

When will Casey be twice as old as Jordan?

can anyone help please need this for tomorrow morning....thank you very much