Identify the exponential function for this graph. (Be sure to look at the scales on the x- and yaxes.)
10-
51
-10
-5
10
-5
-10-2
O A. f(x) = 4 . (0.5)*
B. f(x) = 0.5 . (4)*
C. f(x) = 4 . (2)
O D. f(x) = 2 · (0.5)*