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Firstly we need to work out the new price of the 3 litres of shampoo after 15% has been taken off. Let's use the three step method for percentages. 100% is £12.80 £12.80/ 100= £0.128 1% is £0.128 £0....
Factorise 6x2 + x - 2 = 0
6 x -2 = -12
Kenny originally had £3200 After a year, he had £3360 £3360 - £3200 = £160 160/3200 = 0.05 0.05 x 100 = 5% Therefore, a 5% interest rate was applied to Kenny's account
5x-7x < -6+3 => -2x < -3 => x > 3/2
6x^2 - 10x + 12x - 20
6x^2 + 2x - 20
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