Answer:
The year in which the population passed 6 billion is 2000.
Step-by-step explanation:
We are given that a student looking at global population figures remarks that between the years 1950 and 2010 the global population can be modeled by the equation 300y = 23t − 44180; where (1950 ≤ t ≤ 2010).
And we have to calculate the year in which the population passed 6 billion.
The given expression is;
Firstly, put t = 1960 {as t lies between 1950 and 2010}
= 3 billion
But we have to cross the population by 6 billion.
Now, put t = 1999 in the expression;
= 5.99 billion
Still, it's not passed 6 billion, so finally put t = 2000;
= 6.1 billion
Now, the global population has crossed 6 billion.
Hence, the year in which the population passed 6 billion is 2000.
