The distance between two piers is S miles. Two boats start moving simultaneously from different piers at speeds R and B respectively. Find the distance D between the boats T hours after they have started moving. a) in the direction of the first boat, if the first boat moves slower than the second boat,
b) in the direction of the first boat, if the first boat moves faster than the second boat

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.