17. explain some of the uses of the global positioning system. why might emergency vehicles be equipped with gps receivers?

They can be used to map forests, help farmers harvest their fields, and navigate airplanes on the ground or in the air. They might be used in emergency vehicles to help the driver find the quickest route to the person in need and the quickest way back to the hospital.

answer: at 24 february, 2014 the population gets twice of its initial population.

explanation:

since we have given that

the population for alpha city, t years after january 1, 2004 is given as

first we find out the initial population, i.e. t=0,

so, our quadratic equation becomes,

according to question, we have said that if the population has twice its initial population, then it becomes

so, time taken to reach this above mentioned population is given by

now, we know that time can't be negative so, we take t=9.149 years.

hence, at 24 february, 2014 the population gets twice of its initial population.

this could be newton#'s law of cooling. the cooling curve is exponential