Answer:
175 means the city's population is 175 thousands in 2010.
Explanation:
The model below gives the projection of the city's population , P, in thousands, with respect to time, t, in years, where 2010 corresponds to t=0.
The given equation is

We need to interpret 175 for the given model.
Substitute t=0 in the above equation.


At t=0 the value of P is 175 it means the city's population is 175 thousands in 2010.