Algebra Word Problems
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A small publishing company is planning to produce a new self-help book. The company needs to spend $28,224 for one-time fixed costs such as editing, typesetting, cover design, and so on. Variable costs, including printing and marketing, are $10.75 per book. The publisher will sell the finished product to the bookstores at a wholesale price of $24.75 per book. How many books must the publisher print and sell so that the costs for production will equal the revenue from sales?
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Assume that x books must the publisher print and sell so that the costs for production will equal the revenue ...
Education
- BSc , Wuhan Univ. China
- MA, Shandong Univ.
Recent Feedback
- "Your solution, looks excellent. I recognize things from previous chapters. I have seen the standard deviation formula you used to get 5.154. I do understand the Central Limit Theorem needs the sample size (n) to be greater than 30, we have 100. I do understand the sample mean(s) of the population will follow a normal distribution, and that CLT states the sample mean of population is the population (mean), we have 143.74. But when and WHY do we use the standard deviation formula where you got 5.154. WHEN & Why use standard deviation of the sample mean. I don't understand, why don't we simply use the "100" I understand that standard deviation is the square root of variance. I do understand that the variance is the square of the differences of each sample data value minus the mean. But somehow, why not use 100, why use standard deviation of sample mean? Please help explain."
- "excellent work"
- "Thank you so much for all of your help!!! I will be posting another assignment. Please let me know (once posted), if the credits I'm offering is enough or you ! Thanks again!"
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- "Thank you very much for your valuable time and assistance!"
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