1-5 Find the coordinates of the center and the measure of the radius for a circle whose equation is, 1. (x-8)^2+(y+4)^2=12
2. (x+8)^2+(y-8)^2=81
3. x^2+(y-5)^2=9
4. (x+4))^2+(y+5)^2=64
5.(x-7)^2+(y-3)^2=144
6. Write the equation of a circle whose center is (0, -5) and radius is 7.
7. Write the equation of a circle whose center is (6, -1) and diameter is 12.
8. Write the equation of a circle whose center is (-2, 3) and radius is 4.
9. Find the radius of a circle whose center is (0,3) and a y-intercept of (0,7).

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.