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Mary sells T-shirts in a stall at the shopping centre. When she charges £15 per T-shirt she does not sell anything, however she noticed that every time she reduces the selling prince by £1, sells 15 more t-shirt per hour. A T-shirt cost £4.50 to make and she is charged £130 a day for her stall. Mary opens her stall from 10am to 8pm

E. Write the equation to calculate the maximum profit

F. Using the equation write in a table the price and profit for price ranging from £15 to £3


G. Plot a graph and draw a diagram to represent the profit


H. What is the maximum possible profit? What should be the selling price to achieve it?

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