one time i opened my present given from my uncle for christmas and it was this strange stick and i tried to pull it out and it created this white liquid what the it?

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?