Question

The parking garage charges $3 for the first hour of parking and $1.45 for each additional hour.

Answer 1

I don't know what you are asking but my best guess is it will be
$4.46 in total

Answer 2

What is your question? This just a statement. Are you looking for the graph of the results for every hour? 
1 hour=$3
2 hours=$4.45
3 hours=$5.09
4 hours=$6.54
5 hours=$7.99