Help me with this please?​

Find the domain of the following expression: 1/(√x)-2

What’s -11-33k and factor each expression completely

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?