The graph of f(x) = (0.5)^x is replaced by the graph of g(x) = (0.5)^x -k. if g(x) is obtained by shifting f(x) down by 7 units, the value of k

Will mark the brainliest.paula makes stained-glass windows and sells them to boutique stores. if her costs total $12,000 per year plus $4 per window for the frame. how many windows must she produce to earn a profit of at least $48,000 in one year if she sells the windows for $28 each?