Answer
Bulid the equation for the statement given in the question.
To prove
As given in the question.
Over the course of a year
A company goes from 115 employees to 124 employees this represented the change in the employees in company.
Let us assume that the change in the employees in the company be x.
Than the equation becomes
x + 115 = 124
x = 124 - 115
x = 9
Therefore this represented the increase in number of employees by 9 .