Suppose about 400,000 people live in an area of 160 square miles. what is the best estimate for the population density? a) 1,800 people per square mile b) 2,000 people per square mile c) 2,200 people per square mile d) 2,500 people per square mile

In a coastal town, the humidity, measured in grams of water per kilogram of air, increases by 43% for every 1 degree celsius increase in temperature. a scientist observes that the humidity on monday morning is 5.75 grams per kilogram. he wants to know how much the temperature must increase for the humidity to reach at least 49.17 grams per kilogram. let t represent the increase in temperature, in degrees celsius, from monday morning's observation. write an inequality to represent the situation, and use it to determine the desired temperature increase.