The human population doubles appriximately every 50 years l. If there were 2.5 million people in 1950, how many people are forecasted to populate in the earth in 2100

in 1950 total population = 2.5million

in + 50yrs i. e 2000 the population = 2 * 2.5million = 5million

x = y = 2.5 million

x + 50 = (2^1) y

x + 50 (2) = 2 (^2) y

since 2100 - 1950 = 150 I. e 50*3

x + 50 (3) = (2^3) y

= 8 * 2.5million = 200million by 2100