How do I substitute and solve? I see how it is 3.2 divide it by 1000 kg ×9.80, but I get confused with the end product.

My question is

N is Newtons

Will give for correct answer​

3.2 N = 3.2 kg•m/s²

and

(1000 kg/m³) (9.80 m/s²) = 9800 kg/(m² s²)

Then

(3.2 N) / ((1000 kg/m³) (9.80 m/s²)) = (3.2 kg•m/s²) / (9800 kg/(m² s²))

… = 3.2/9800 m³

… = 0.00032653… m³

and converting to scientific notation gives

… = 3.2653… × 10⁻⁴ m³

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.