The world's highest shooting water fountain is located in fountain hills arizona. the water rises to a height of 171 meters. a) what is the initial speed of the water? b) how much time does it take for the water to reach the highest point?

d

explanation:

i think the answer is d. but im not sure!

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.