In a given year, Houston has good air quality 48% of the days, moderate air qual

Question

In a given year, Houston has good air quality 48% of the days, moderate air quality 41 % of the days, and unhealthy air quality 4% of the days. How many days per year do residents have unhealthy air quality? 7.6 361 14.6 175.2 48 In 2000, China emitted 18, 712.71 thousand metric tons per year of nitrogen oxides. In 2015, China emitted 22, 357.03 thousand metric tons per year of nitrogen oxides. What was the percent change from 1990 to 1995? 41.83% 87.92 29.64 11.78 19.48% What has been the percent change in increasing atmospheric carbon dioxide concentration from about 300 years ago when it was approximately 263 parts per million (ppm) to today when it averages 420 ppm? 42.6 39.1 59.7% 73.8 15.3

Explanation / Answer

17)
There are 365 days in a year
number of unhealthy days = 4% of 365
= 4*365/100
=14.6 days
Answer: C

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