It’s a crazy sock day at school. You have four brown socks, 7 blue socks, and 8 black socks. What is the probability that you will choose a black sock, replace it and then choose a blue sock?

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?