The center of a circle is at (−3, 1) and its radius is 9.

what is the equation of the circle?

(x−3)2+(y+1)2=81

(x+3)2+(y−1)2=18

(x+3)2+(y−1)2=81

(x−3)2+(y+1)2=18

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? 1. define a variable for the situation. 2. write an inequality that represents her profit. note: revenue is money coming in. cost is money going out. profit is the difference between the revenue and the cost. in other words: revenue - costs profit 3.using words, describe how many windows she must sell to have a profit of at least $48,000.