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Question 10 (Mandatory) (1 point) If /(x) - x* - 1 and g(x) = x+1, for what value(s) of x are Alg(x)) and g(f(x)) equal? ( a) x = 0, 1 (b ) x = 0 O d) * = - 7 Question 11 (Mandatory) (1 point) For what value(s) of x does /(x) = (x - 16)5 have a horizontal tangent? ( a) x = 0 ( b) x = -4, 0, 4 O c) x = 0,4 O d) x = -4,4 Question 12 (Mandatory) (1 point) Determine the slope of the tangent to y = 1- 5x+5x3 when x = 1. ( a) 10 O b) 1 O c) -10 O d) 15