The population of Rock Springs is growing at a constant rate. The expression represents the increase in population in x years.

45,200 + 1,900x

What is the initial population of Rock Springs?
Responses
A 00
B 1,9001,900
C 45,20045,200
D 47,100

The initial population of Rock Springs is given by the constant term (45,200) in the expression. Therefore, the correct answer is C, 45,200.