world problem

Question

In the nineteenth century, explorers used the boiling point of water to estimate altitude. The boiling temperature of water T (in F) can be approximated by the model T = -1.83a+212, where a is the altitude in thousands of feet. Determine the temperature at which water boils at an altitude of 9,000 ft. Round to the nears degree. 

Answer 1

T = -1.83 * 9  + 212 = 212 - 1.83 * 9 = 195.93