If k>0, then the graph of the function g(x) = (0.5)x − k is obtained from the graph of the function <span>f(x) = (0.5)x by translation k units down. </span> <span>Since g(x) is obtained by shifting f(x) down by 3 units, the value of k is 3. </span><span> </span><span>Answer: k=3.</span>