essible Mt. Everest? 81. Newest Dinosaur: The PC-osaurus? For the period from 20
ID: 3149275 • Letter: E
Question
essible Mt. Everest? 81. Newest Dinosaur: The PC-osaurus? For the period from 2009 through 2012, worldwide PC sales stayed relatively flat, while tablet sales skyrocketed. The bar graph shows worldwide PC and tablet sales, in millions, from 2009 through 2012. Worldwide PC and Tablet Sales e each arithm 175 150PC Sales 125 100F 75 50F 33.5 25 150.1 Tablet Sales 36.6 98.1 35.4 53.9 37.1 16.8 20092010 2011 13.5 62.7 thms 2012 Year Source: Canalys e or ion ice The function 33.4(1.66y models worldwide PC and tablet sales combined. fo). in millions, years after 2009. When does this model project that 421 million PC and tablets were sold? Round to the nearest year. Based on the relatively flat PC sales over the four years shown by the graph, estimate the number of tablet sales for that year.Explanation / Answer
f(t) = 33.4(1.66)t
421 = 33.4(1.66)t
421/ 33.4 = 1.66t
log (421/33.4) = t log 1.66
t = 5 years after 2009 = 2014
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