To calculate Alicia's total earnings for a job that takes 3 hours, we can use the formula:
\[ \text{Total Earnings} = 65h + 100 \]
where \( h \) is the number of hours worked.
Now, substituting \( h = 3 \):
\[ \text{Total Earnings} = 65(3) + 100 \] \[ = 195 + 100 \] \[ = 295 \]
Thus, Alicia will earn $295 for a job that takes 3 hours.