exam Maths Puzzle Numerical Ability

2x + y > or = 0
2x + 3y > or = 16
x + 3y . or = 11
x < or = 20, y < or = 20

Min C=4x + 3y with contraints

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exam Other Question

I need to solve and graph this problem.

5(x-3)<2(x-3) Translate statement into algebriac equation. Let X represent the number, 12 less than 5 a number is 18.

Is this the correct anwer? (12 - 5)= 18

Thanks so much for you help!