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Asymptotic approximations by Harold Jeffreys

By Harold Jeffreys

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What is the cost of 6 CDs? c. How many CDs could you buy if you had \$36? d. How many CDs could you buy if you had \$100? 16. Sales A fraternity is selling T-shirts on the day of a football game. The shirts sell for \$8 each. a. Complete the table. Revenue is defined as the number of units sold times the selling price. ) 1 a. The median sale price in Honolulu, Hawaii, was \$295,000. b. In Providence, Rhode Island, the median sale price was \$137,800. c. \$170,100 was the median sale price in Portland, Oregon.

4. An indication of the interval of input values over which the model is valid. This information should be given whenever the model is presented or used apart from the data from which it was obtained. 36 CHAPTER 1 Ingredients of Change: Functions and Models As you proceed through this course, take the time to record your models completely and to report your answers accurately. If you practice proper reporting while you work through the activities on linear models, you will begin to develop a habit that will help you throughout your study of calculus in this text.

Determine whether the slope is positive or negative, b. tell whether the function is increasing or decreasing, and c. determine the vertical axis intercept. 5. f(x) ϭ Ϫ2x Ϫ 4 6. g(t) ϭ 2t ϩ 5 7. k(r) ϭ Ϫ3r ϩ 7 8. s(p) ϭ 3p Ϫ 2 In Activities 9 through 12, write an appropriate linear model for the given rate of change and initial output value. Label the linear model. 9. Cost increases by 30 cents per unit produced and the fixed cost is 150 dollars. 10. 5 thousand people per year. 11. 25 inch per hour.