I need help with these 2 questions really fast

New lab X New Tab X HELP CENTER ulus I) 2022Fall - 2:00 - 2:50 - Varatharajah (5.1-5.3) Derivative Rules This quiz: This questic Let f(x) = 2x3 + 3x--12x -8. a. Find all points on the graph of f(x) at which the tangent line is horizontal. b. Find all points on the graph of f(x) at which the tangent line has slope 60. a. The tangent line is horizontal at the point(s). (Type an ordered pair. Use a comma to separate answers as needed. b. The slope of the tangent line is 60 at the point(s) (Type an ordered pair. Use a comma to separate answers as needed.) 14 15 16New lab New lab New Tab X HELP CENTER (Calculus 1) 2022Fall - 2:00 - 2:50 - Varatharajah Quiz3 (5.1-5.3) Derivative Rules Question 6 of 16 This This n list Let f(x) = x - 4x - 6 a. Find the values of x for which the slope of the curve y = f(x) is 0. b. Find the values of x for which the slope of the curve y = f(x) is - 14 ion 6 a. The slope of the curve is 0 at x = stion 7 (Simplify your answer. Use a comma to separate answers as needed ) b. The slope of the curve is - 14 at x = (Simplify your answer. Use a comma to separate answers as needed ) estion 8 gestion 9 Question 10 Question 10