An article suggested that yield strength (ksi) for A36 grade steel is normally distributed with μ = 45 and σ = 5.0. (a) What is the probability that yield strength is at most 38? Greater than 63? (Round your answers to four decimal places.) at most 38 .0808 Correct: Your answer is correct. greater than 63 .0001 Correct: Your answer is correct. (b) What yield strength value separates the strongest 75% from the others? (Round your answer to three decimal places.) 48.372 Incorrect: Your answer is incorrect. ksi

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.