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GE Net Income 2007–2011 The annual net income of General Electric for the period 2007–2011 could be approximated by
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Finite Mathematics and Applied Calculus (MindTap Course List)
- Cell Phones Using the CTIA Wireless Survey for1985–2009, the number of U.S. cell phone subscribers (in millions) can be modeled byy = 0.632x2 - 2.651x + 1.209where x is the number of years after 1985.a. Graphically find when the number of U.S.subscribers was 301,617,000.b. When does the model estimate that the number ofU.S. subscribers would reach 359,515,000?c. What does the answer to (b) tell about this model?arrow_forwardAn evergreen nursery usually sells a certain shrub after 7 years of growth and shaping. The growth rate during those 7 years is approximated by...arrow_forwardWorld Military Expenditure The following chart shows total military and arms trade expenditure from 2011–2020 (t = 1 represents 2011). †A bar graph titled "World military expenditure" has a horizontal t-axis labeled "Year since 2010" and a vertical axis labeled "$ (billions)". The bar graph has 10 bars. Each bar is associated with a label and an approximate value as listed below. 1: 1,800 billion dollars 2: 1,775 billion dollars 3: 1,750 billion dollars 4: 1,730 billion dollars 5: 1,760 billion dollars 6: 1,760 billion dollars 7: 1,850 billion dollars 8: 1,900 billion dollars 9: 1,950 billion dollars 10: 1,980 billion dollars (a) If you want to model the expenditure figures with a function of the form f(t) = at2 + bt + c, would you expect the coefficient a to be positive or negative? Why? HINT [See "Features of a Parabola" in this section.] We would expect the coefficient to be positive because the curve is concave up. We would expect the coefficient to be negative because the…arrow_forward
- Exer. 31-32: Find an exponential function of the form f(x) = ba-* + c that has the given horizontal asymptote and y-intercept and passes through point P. 31 y = 32; y-intercept 212; P(2, 112) 32 y = 72; y-intercept 425; P(1, 248.5)arrow_forwardUsing data and projections from 1980 through 2050, the number (in millions) of people in a census category of a population is given by y=0.834x+6.015,where x is the number of years after 1980. During what year was the number of people in this category 11 million, if this model is accurate? The year in which the population numbered 11 million was _____.arrow_forwardExer. 29-30: Find an exponential function of the form f(x) = ba* that has the given y-intercept and passes through the point P. 29 y-intercept 8; P(3, 1) 30 y-intercept 6; P(2,)arrow_forward
- Algebra & Trigonometry with Analytic GeometryAlgebraISBN:9781133382119Author:SwokowskiPublisher:Cengage