Which of the following explains how to obtain the graph of y=2+5(1+e^(−x)) from the graph of y=e(−x)?
(a) Vertically stretch the graph of y=e^(−x) by a factor of 5 and then shift this result up 2 units.
(b) Vertically stretch the graph of y=e^(−x) by a factor of 5 and then shift this result down 2 units.
(c) Vertically stretch the graph of y=e^(−x) by a factor of 5 and then shift this result up 7 units.
(d) Vertically stretch the graph of y=e^(−x) by a factor of 5 and then shift this result down 7 units.