Question: (a) Write 5x+2x-7 in the form a(x +b) + c, where a, b, and c are real numbers. (4 marks) (b) Hence, or otherwise,

(a) Write 5x+2x-7 in the form a(x +b) + c, where a, b, and c are real numbers. (4 marks) (b) Hence, or otherwise, determine (i) the minimum value of the function y = 5x+2x-7 (ii) the value of x at which the minimum occurs (3 marks)

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