please help me with these 2 questions, thank u.

3x2 1. For the function x2 - 4 the first and second derivatives are given. [13] - 24x y'= (x2 - 4)2 a) Determine any intercepts [1] b) Determine equation of vertical asymptotes. For vertical asymptotes, investigate function values on either side of the asymptote. [2] c) Determine the equation of the horizontal asymptote and End Behaviors [2]d) Interval of Increase/decrease and any local maximum and minimum points. [2] e) Determine the intervals for which the curve is concave up/concave down. [2] f) State the coordinates of any points of inflection. [1] g) Sketch the graph of the function, clearly labelling all information from a) to f). [3]2. The temperature 7, in "C, as a function of t hours is T(t) = -=t* + 2t3 - 4t2 + 7 where 0 S t S 12. [5] a) When is the temperature decreasing? [3] b) What is the lowest temperature reached over the first 4 hours? [2]