On a particular day, denali had a temperature of -23°c at its peak and 13°c at its base. what could be the reason for this temperature difference?

a. temperature increases with an increase in altitude
b. temperature decreases with an increase in altitude
c. the base is close to the gulf of alaska
d. the mountain receives lake effect snow

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.