A restaurant can be hired out for children's parties, and the cost is shown by the formula "Cost = (£13.50 x number of children) + £23". What is the cost for 8 children?
Cost = (13.50 x number of children) + 23.Cost = (13.50 x 8) + 23.BIDMAS. Brackets first.Cost = 108 + 23 = £131.
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