Suppose the population of a country in 1985 was 145 million. in 1995 it was 190 million. use the formula to setup an expression to estimate the population of the country in 2005. a. b. c. d.

we have given an expression

in 1985 the population was 145 million which mean t=0.

when 1985 ,t=0 .

from 1985 to 2005 there 20 years passed.so t=20

so .

here k =0.027 which is growth constant it means it increasing at 2.7 % per year .

so option B will be the answer.

x =±sqrt(1/3)

step-by-step explanation:

x+4/6x=1/x

multiply each side by 6x to get rid of the fractions

6x*(x+4/6x)=1/x*6x

distribute

6x^2 +4 = 6

subtract 4 from each side

6x^2 +4-4 = 6-4

6x^2 =2

divide by 6

6x^2/6 = 2/6

x^2 = 1/3

take the square root of each side

sqrt(x^2) = ±sqrt(1/3)

x =±sqrt(1/3)