$13/hour for 40 hours = $520 before taxes.
There's no way to know the amount of your personal taxes and other witholding.
12 dollares
13 dollars an hour for 40 hours = 13*40 = 520 dollars per week. A "normal" year is 52 weeks and 1 day (a leap year is 52+2). So, if you work 50 weeks, you will make 520*50 = 26,000 dollars. Less if you work fewer than 50 weeks.
short form for 13 dollars per hour
6,000 a year
13 weeks = 13*7 days = 13*7*24 hours = 2184 hours