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Unformatted text preview: Algebra 2
Review 3.1 to 3.3 No Calculator Allowed For questions ] and 2, express as a power of 2.
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45% 5“ a7 "E” Gm hin CalculatorAllowed 12. For questions 15 and 16, evaluate each expression when x = 4. 15. 12(2") 1 [2. 27 16. 10246? For question 17 and 18, do each of the following:
3. Find the y—intereept of the graph.
b. Does the graph illustrate exponential growth or decay? Explain.
c. Sketch the graph. 17. y: 6(0.8)*
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97% 2. ; l9. $1500 is invested in a bank at 2.5% interest, compounded annually. at. Write an equation of the form y = c1112]r for the amount in the account after x years. 2 2: 1.520 (/222ij b How many years Jill it take for the original amount to double?
Explain how you arrived at your ans__wer. ,wV'] mmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm Kong/.1 (:012 (I 02?) cute, . .. (7;: 23,071 jam)” .2 M “M. 0. Write an equation of the form y I a (2) ”d for the amount of money in the account alter x years. 20 The population In Detriot Michigan 15 decaying at annual rate of 2.5% each year Detroit’ 3 current
population IS 2. 3 million people *********** ‘ a. Write an equation of the form y = abx for the population in the after x years. f] a». pay (M «mil hm; u g: 2.3 (ﬂ75Y‘ b. How many years will it tithe for the population to be half its current population?
Explain how you arrivedal floutanswer. 62:" 2 222351] Y1 Y2. 9W1}; ﬂak (M frggiﬁm ‘ xix O77: 375/t’61/J 0. Write an equation of the form y = a (1/2) ""h for the population in Detroit after x years. W“ “"1" A7!" 555227 @222 V 2:2 237224221227 a) Find the average growth rate for the health care expenditure r22: gwww w“ b) Write an equation that models this data what do the variables represent?
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“’4" 3: H} ((4.217)3 a a: 1W“ W: 2226 c) Use your equation to estimate the Health Care eXpenditure f01 the followingK years: 1290 a) 2000 f}: («(20.2.27)g 1570.22.2/ b) 2012
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 Spring '08
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