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The polynomial graph crosses the x-axis at two points and touches x-axis at one point. It indicates the graph has four roots:
The last two roots have equal value as the graph touches the x-axis (not crosses it)
The graph has three unique roots
The last two roots have equal value as the graph touches the x-axis (not crosses it)
The graph has three unique roots
Answer:
The world population will be 11.64 billions in 21 years.
Step-by-step explanation:
Initial population = 8 billion
Growth rate = 1.8% per year =0.018
Time = 21 years
We are supposed to find what will the world population be in 21 years
Formula :
y = population after t years
r = rate of interest in decimals
t = time in years
Substitute the values :
Hence the world population will be 11.64 billions in 21 years.