A school canteen has an allocation of Rm300 per day to buy fish and chicken. The minimum mass of a fish purchased is 5kg. The mass of fish cannot exceed twice the mass of chicken purchased. The prices for one kilogram of fish and one kilogram of chicken are RM12 and RM10 respectively. i) Write three linear inequalities other than x≥0 and y≥0.
ii) Draw graph and shade the region that satisfies the system of linear inequalities.
iii) From the graph drawn, determine the minimum balance of money after the manager of canteen bought 7kg of chicken
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