Question: 1. Child Mortality Rate The mortality rate for children under 5 years of age around the world has been declining in a roughly linear fashion in recent years. The rate per 1000 live births was 90 in 1990 and 65 in 2008. Source: World Health Organization.
a. Determine a linear equation that approximates the mortality rate in terms of time t , where t represents the number of years since 1900.
b. If this trend continues, in what year will the mortality rate ?rst drop to 50 or below per 1000 live births?
2. Health Insurance The percentage of adults in the United States without health insurance increased at a roughly linear rate from 1999, when it was 17.2%, to 2008, when it was 20.3%. Source: The New York Times.
a. Determine a linear equation that approximates the percentage of adults in the United States without health insurance in terms of time t , where t represents the number of years since 1990.
b. If this trend were to continue, in what year would the percent- age of adults without health insurance be at least 25%?