Verify: csc^2(x)-2csc(x)cot(x)+cot^2(x)=tan ^2(x/2)

What are the solutions of the system? solve by graphing. y = -x^2 - 3x + 2 y = -2x + 2

If y varies directly as x2 and y=6 when x=6, find the constant of variation.

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.