X^2-9=-5
x^2-4=0
(x+2)(x-2)=0 [Difference of Two Squares]
x=-2,2
-2 is the smaller root.
Answer:
1
Step-by-step explanation:
Answer:
Infant mortality will reduce to 33% in 1.63 years
Step-by-step explanation:
Let the population be X
Population after 1 year
% of 

As we know

Substituting the given values we get -

Taking log on both sides we get -

Great Job! they are all correct. :)
Good luck in your next tests.