exam Maths Puzzle Numerical Ability

(2x^2-2x+1)+(5x^2-x-2)

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Maximize the objective function C=3x + 2y with the constraints x+ 2y is less than or equal to 4, x-y less than or equal to 1, x greater than or equal to 0, y greater than or equal BEN IS MAKING WOODEN FOR THE NEXT ARTS AND CRAFTS SALE. EACH TOY COSTS BEN $1.80 TO MAKE. IF HE SELLS THE TOYS FOR $3.00 EACH, HOW MANY WILL HE HAVE TO SELL TO MAKE A PROFIT OF EXACTLY $36.00?