In​ 2012, the population of a city was 5.12 million. The exponential growth rate was 3.15% per year. ​a) Find the exponential growth function. ​b) Estimate the population of the city in 2018. ​c) When will the population of the city be 8 ​million? ​d) Find the doubling time. ​

idk

step-by-step explanation:

for this case we have by definition, if two lines are perpendicular, then the product of their slopes is -1.

then, given the following line:

so,

we are looking for m_ {2}:

then, the line is given by:

we find "b" replacing the given point:

finally, the equation is:

option c

the answer is 13

step-by-step explanation:

5*5=25

12*12=144

25+144=169

169^2=13