The data in the table gives the percentage of MySpace users who are a certain age Use the data for females. MySpace Users of a Certain Age and Gender as a Percentage of all MySpace Users Female, f (percent) Male Age (years) (percent) 17 9.6 8.8 19 7.8 7.6 21 6.1 6.0 23 5.1 4.6 25 4.3 4.0 27 3.8 4.4 29 2.4 2.7 31 2.1 1.9 33 1.2 1.5 35 1.1 1.3 (a) Align the input data to the number of years x after 17. Find an exponential function that models the MySpace female user data. (Round all numerical values to three decimal places.) f(x)= (b) According to the model in part (a), what is the percentage change in the percentage in your model? % (c) What percentage of female MySpace users are 20 years old? (Round your answer to one decimal place.) % What percentage of female MySpace users are 30 years old? (Round your answer to one decimal place.) % Are these answers found using extrapolation or interpolation? extrapolation interpolation

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