exam Maths Puzzle Numerical Ability

QUESTION: SOLVE THE SYSTEM BY GRAPHING

X+Y=4
-X+Y=2

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exam Other Question

Can someone please help me solve this word problem. I am not able to come up with an inequality.

You have at least $30.00 in change that are dimes and quarters. Write an inequality that shows the different numbers of coins.

Thank you. f(x)=x^3-5x^2-14x
f(x)=x^3+4x^2+9x+36
f(x)=x^4+x^3-2x^2+4x-24