By Samuel Moy

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5671 m when mea- 30. 4 weeks:21 days sured at room temperature. 45% due to heating, what will its length be then? 31. :5 ft 50. 1 L. By what percent was the volume decreased? Find each unit rate. 32. $60 in 5 hr 51. Chocolate malt balls used to sell for seventy-five 33. 44 bushels from 8 trees cents a pound, but you see that the new price is eighty-one cents a pound. What is the percent increase? 34. 5 lb fish Solve the following proportions for x. x 4 35. ϭ 3 7 37. xϪ3 3 ϭ 8 4 8 2 36. ϭ 3 2x 38.

How many games did each brother win? 27. The sum of three consecutive integers is 87. What are the three integers? 28. Are there three consecutive integers whose sum is 100? Explain your answer. 29. The sum of three consecutive odd integers is Ϫ273. What are the numbers? 30. The sum of three consecutive odd integers is 1503. What are the integers? 31. A real estate agent estimates the value of a certain house and lot to be $175,000. 5 times the value of the lot, how much is each worth separately?

5x ϭ 2x Ϫ 7 6 Express the following ratios in simplest form. 15. 4 hr:1 day 16. 10 ft:160 in. Find each unit rate. 17. 20 for 4 days 18. 5 lb for six people 19. 50 eggs from 10 chickens Suggested Laboratory Exercises Solve the following proportions for x. 20. 3x 7 ϭ 12 10 21. 2x ϩ 3 xϪ4 ϭ 8 9 47 30. 10 per mile driven. 30 per mile. For what number of miles driven would the cost of renting a car from company A equal that of company B? 31. Maria invested $15,000 in a technology company Solve the following percent problems.

### An introduction to the theory of field extensions by Samuel Moy

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