Question

Question 1 of 10 The population of a city in 2005 was 18,000. By 2010, the city’s population had grown to 45,000. Economists have determined that the population growth follows an exponential model. If they are correct, what is the projected population for 2015?

Answer 1

Given : The population of a city in 2005 was 18,000. By 2010, the city’s population had grown to 45,000 .

Any exponential growth is represented by the formula y= a$b^{x}.$

a is the initial population y is the final population .t represents the number of years.

Substituting the values :

45000 = 18000 $b^{5}.$

Solving for b

b=1.2

Number of years from 2005 to 2015 is 5 years.

Y= 45000$(1.2)^{5}.$

y= 111974.4

Population in 2015 is 111974.

Answer 2

I believe the answer would be 57,500 people... if ur rounding it would be 58,000 or 60,000