The number of presents p that Tim can afford to buy varies inversely with their average cost C (in dollars). It Tim can afford 5 presents when their average cost is $12, what average cost would 3 presents have?

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?