În Figura 2 este reprezentat un trapez isoscel ABCD cu AB paralel cu CD , AC paralel BD , AB = 8m , CD = 4m. Punctele M , N , P și Q sunt mijloacele laturilor AB, BC , CD, respectiv DA și O este punctul de intersecție a diagonalelor trapezului.

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.