Concept explainers
Olympic 5000-Meters The accompanying graph shows the winning time (in minutes) at the Olympic Games from 1952 to 2016 for the men's 5000-meterrun, together with a linear approximation of these data. (Data from: The WorldAlmanac and Book of Facts: 2017.)
The equation for the linear approximation is
Employee Health Costs In the year 2010, the average annual cost to employees for employer family health coverage was approximately$3500. In 2015, that amount was approximately $5000. (Data from: The Wall Street Journal.)
a. Write a linear equation expressing the average annual cost to employees y in terms of the number of years x after 2000.
b. What was the average annual cost in 2014?
c. If the trend continues, what will be the first full year in which costs exceed $6000?
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EBK MATHEMATICS WITH APPLICATIONS IN TH
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