In a class in which the final course grade depends entirely on the average of four equally weighted 100-point tests, Harold has scored 92, 84, and 85 on the first three. What range of scores on the fourth test will give Harold a C for the semester (an average between 70 and 79, inclusive)? Assume that all test scores have a non-negative value.

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.