Help i'm not sure which is correct Alexander can earn money for the cans he recycles. Which of the following statements describes the variables in this situation correctly?

1: The number of cans recycled is the independent variable because it affects the amount of money earned.
2:The number of cans recycled is the dependent variable because it affects the amount of money earned.
3:The amount of money earned is the independent variable because it affects the number of cans recycled.
4:The amount of money earned is the dependent variable because it affects the number of cans recycled.

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.