Which is the graph of f(x) = 0.5(4)x?

On a coordinate plane, an exponential growth function approaches y = 0 in the second quadrant and goes through points (0, 1), (2, 8), (3, 32).
On a coordinate plane, an exponential growth function approaches y = 0 in the second quadrant and goes through points (0, 4), (1, 16), (2, 64).
On a coordinate plane, an exponential growth function approaches y = 0 in the second quadrant and goes through points (0, 1), (3, 8), (4, 16).
On a coordinate plane, an exponential growth function approaches y = 0 in the second quadrant and goes through points (0, 1), (1, 8), (2, 32).

Question

Which is the graph of f(x) = 0.5(4)x?

On a coordinate plane, an exponential growth function approaches y = 0 in the second quadrant and goes through points (0, 1), (2, 8), (3, 32).
On a coordinate plane, an exponential growth function approaches y = 0 in the second quadrant and goes through points (0, 4), (1, 16), (2, 64).
On a coordinate plane, an exponential growth function approaches y = 0 in the second quadrant and goes through points (0, 1), (3, 8), (4, 16).
On a coordinate plane, an exponential growth function approaches y = 0 in the second quadrant and goes through points (0, 1), (1, 8), (2, 32).

darkknight · Answer

.5(4)x is 2x. Do you mean .5(4)^x?

darkknight · Answer

because that would be exponential

Mercury · Answer

all of the graphs show the same quadrant and limit so the best best is simply to go off the points mentioned

plug in x = 1, 2 and 3 into the function f(x) = 0.5(4)^x and see which graph is consistent with the appropriate values