Select all the quantities that describe a unit rate. Mark bought 1 pound of grapes.

A recipe calls for 3 cups of flour for 1 cake.

Emma drank 2 cups of coffee per day.

Madison had 4 books and 3 notebooks in her backpack.

Daniel makes $340 each month at his summer job.

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.