ID) The function for) = ax' + bx' +116x + 30 has a factor of; 3. Furthermore, when x) is divided by x + l. the rcmaindcr is 96. Determine the values tofu and b. {I 3 marks) 1 1) A student named Polly Nomial claimed that the function f(x) = -3(2x + 4)' -1 has local maxima and minima. Is Polly's claim correct? Explain. (C-2 marks)