Find the total balance of each investment account earning simple annual interest. A: $624 at 5% for 3 years B: $4,120 at 7% for 18 months C: $900 at 3.1% for 6 months D: $275 at 4.8% for 8 years

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.