4c.(i) Find the number c that satisfies the conditions of the Mean Values Theorem for the function g(x) = 3e^-x defined on the interval [0, 5].
4c.(ii) Now draw the graph of g(x), and on the same axis system draw the line joining the points on the graph at the endpoints x = 0 and x = 5 of the interval. Also draw the tangent to g(x) which is parallel to this line, and explain where (at which x-value) this line is tangent to the graph.