The minutes of daylight each day of the year in a certain northern town are approximately modeled by the function f(x)=−125x−1732+1424 Where x represents the day of the year (January 1 is x=1) and f(x) represents the minutes of sunlight. The vertex of this function means that on the longest day of the year —June 22nd (day 173)—this town saw minutes of sunlight.

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.