Anumeha is mowing lawns for a summer job. For every mowing job, she charges an initial fee of $\$10$ plus a constant fee for each hour of work. Her fee for a $5$-hour job, for instance, is $\$35$.
Let $F(t)$ denote Anumeha's fee for a single job $F$ (measured in dollars) as a function of the number of hours $t$ it took her to complete it.
**Write the function's formula.**
$F(t)=$ [[☃ expression 1]]