given the following:
f(x) = 2^-x+2
g(x) = -2^x +2
H(x) = 2^x+2
we are ask to match each function in the graph with the letter corresponding to its graph.
f(x) = 2^-x + 2 corresponds to the letter A
g(x) = -2^x + 2 corresponds to letter B
H(x) = 2^x + 2 corresponds to letter C