8. Where is the first mistake? 5(2x + 4) = 10(6x – 8)
10x + 20 = 60x – 80
10x = 60x – 100
-50x = -100
x = -2
A. Distributing the 5
B. Distributing the 10
C. Subtracting 60x from both sides
D. Dividing by -5°

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.